Defines the start and end of a stage with a duration of 1 month, relative to either the time of fertilization or last menstrual period of the mother (to be clarified), counting from one, in terms of a reference model. Thus if month_of_gestation=3, then the stage is 2 month in.
This is a shortcut annotation that can be expanded to an OWL axiom, or to a set of OWL axioms. The exact translation has yet to be determined, and may be application-dependent.
Count of number of days intervening between the end of the stage and the time of fertilization according to a reference model. Note that the first day of development has the value of 1 for this property.
Count of number of months intervening between the end of the stage and the time of birth according to a reference model. Note that the first month of post-birth development has the value of 1 for this property, and the period during which the child is one month old has the value 2
Count of number of years intervening between the end of the stage and the time of birth according to a reference model. Note that the first year of post-birth development has the value of 1 for this property, and the period during which the child is one year old has the value 2
Subset consisting of classes describing highly granular developmental stages (for instance, '23-year-old'). Such stages might be useful for annotation purpose, but might be folded into less granular parents for display purpose.
A relationship between a stage class and an anatomical structure or developmental process class, in which the stage is characterized by the appearance of the structure or the occurrence of the biological process
Used to associate a measurement property (e.g. days post fertilization) with a unit (e.g. days)
Count of number of days intervening between the start of the stage and the time of fertilization according to a reference model. Note that the first day of development has the value of 0 for this property.
Count of number of months intervening between the start of the stage and the time of birth according to a reference model. Note that the first month of post-birth development has the value of 0 for this property, and the period during which the child is one month old has the value 1.
Count of number of years intervening between the start of the stage and the time of birth according to a reference model. Note that the first year of post-birth development has the value of 0 for this property, and the period during which the child is one year old has the value 1.
X preceded_by Y iff: end(Y) before_or_simultaneous_with start(X)
X immediately_preceded_by Y iff: end(X) simultaneous_with start(Y)
A spatiotemporal region encompassing some part of the life cycle of an organism.
Temporal interval that defines human life from the prenatal stage until late adulthood.
Prenatal stage that starts with fertilization and ends with a fully formed embryo, before undergoing last development during the fetal stage.
By embryo we mean in the sense of up to the 8th week postfertilization (over 7 and under 8 weeks), we treat fetus as a separate stage.
Embryonic stage defined by a fertilized oocyte and presence of pronuclei.
Starts at day 1 post-fertilization, beginning of the first week.
Early stage of Carnegie stage 02 consisting of division of cells in the early embryo.
Embryonic stage during which cell division occurs with reduction in cytoplasmic volume, and formation of inner and outer cell mass.
Usually starts between day 2 and day 3 post-fertilization.
Embryonic stage that is an early stage of embryonic development in animals and is produced by cleavage of a fertilized ovum, with formation of a central fluid-filled cavity called the blastocoel.
The blastula follows the morula and precedes the gastrula in the developmental sequence.
Blastula stage with the loss of the zona pellucida and the definition of a free blastocyst.
Usually starts between day 4 and day 5 post-fertilization.
Blastula stage during which the blastocyst becomes attached.
Note that GO treats blastocyst attachment and implantation (CS05) as synonymous
Usually starts between day 5 and day 6 post-fertilization.
Blastula stage during which implantation occurs.
Usually starts between day 7 and day 12 post-fertilization, beginning of the second week.
Embryonic stage defined by a complex and coordinated series of cellular movements that occurs at the end of cleavage.
Gastrula stage during which the extraembryonic mesoderm and primitive streak appear.
Usually starts between day 13 and day 15 post-fertilization.
Embryonic stage defined by the formation of a tube from the flat layer of ectodermal cells known as the neural plate.
This stage starts the emergence of the central nervous system.
Neurula stage during which the notochordal process appears, and gastrulation is continuing.
Usually starts between day 15 and day 17 post-fertilization, beginning of the third week.
Neurula stage during which the primitive pit and the notochordal canal appear.
Usually starts between day 17 and day 19 post-fertilization.
Embryonic stage at which the ectoderm, endoderm, and mesoderm develop into the internal organs of the organism.
Organogenesis stage during which somites 1-3 appear, and neural folds, cardiac primordium, and head fold are present.
Usually starts between day 19 and day 21 post-fertilization.
Organogenesis stage during which somites 4-12 appear, and the neural fold fuses.
Usually starts between day 22 and day 23 post-fertilization, beginning of the fourth week.
Organogenesis stage during which somites 13-20 appear, and the rostral neuropore closes.
Usually starts between day 23 and day 26 post-fertilization.
Organogenesis stage during which somites 21-29 appear, and the caudal neuropore closes.
Usually starts between day 26 and day 30 post-fertilization.
Organogenesis developmental stage during which somite 30 appears, and leg buds, lens placode, pharyngeal arches are present.
Usually starts between day 28 and day 32 post-fertilization, beginning of the fifth week.
Organogenesis stage during which lens pit and optic cup appear.
Usually starts between day 31 and day 35 post-fertilization.
Organogenesis stage during which lens vesicle, nasal pit, and hand plate appear.
Usually starts between day 35 and day 38 post-fertilization.
Organogenesis stage during which nasal pits moved ventrally, and features are auricular hillocks, and foot plate.
Usually starts between day 37 and day 42 post-fertilization, beginning of the sixth week.
Organogenesis stage during which finger rays become visible.
Usually starts between day 42 and day 44 post-fertilization.
Organogenesis stage during which ossification commences.
Usually starts between day 44 and day 48 post-fertilization, beginning of the seventh week.
Organogenesis stage during which the straightening of the trunk starts.
Usually starts between day 48 and day 51 post-fertilization.
Organogenesis stage during which upper limbs are longer and bent at elbow.
Usually starts between day 51 and day 53 post-fertilization, beginning of the eighth week.
Organogenesis stage during which hands and feet turned inward.
Usually starts between day 53 and day 54 post-fertilization.
Organogenesis stage during which eyelids and external ears appear.
Usually starts between day 54 and day 56 post-fertilization.
Organogenesis stage during which the head, the body, and the limbs are rounded structures.
Usually starts between day 56 and day 60 post-fertilization.
Carnegie developmental stage 5 defined by a solid trophoblast.
Carnegie developmental stage 5 defined by a trophoblastic lacunae.
Carnegie developmental stage 5 defined by a lacunar vascular circle.
Carnegie developmental stage 6 during which chorionic villi appear.
Carnegie developmental stage 6 during which the primitive streak appears.
Prenatal stage that starts with the fully formed embryo and ends at birth.
Prenatal development is a continuum, with no clear defining feature distinguishing an embryo from a fetus. The use of the term "fetus" generally implies that a mammalian embryo has developed to the point of being recognizable as belonging to its own species, though the point at which this occurs is subjective. [Wikipedia:Fetus]
Prenatal stage that starts with fertilization and ends at birth.
Fetal stage when the fetus is over 8 and under 9 weeks of development.
External genitalia begin to distinguish themselves as either male or female. Eyelids are completely closed, and vocal ligaments appear (see http://ehd.org/resources_bpd_documentation_english.php).
Fetal stage when the fetus is over 9 and under 10 weeks of development.
The fingernails and toenails begin to develop and unique fingerprints appear. Ossification is underway in most bones (see http://ehd.org/resources_bpd_documentation_english.php).
Fetal stage when the fetus is over 10 and under 11 weeks of development.
The nose and lips are completely formed, and external genitalia can be distinguished as male or female (see http://ehd.org/resources_bpd_documentation_english.php).
Fetal stage when the fetus is over 11 and under 12 weeks of development.
Upper limb length has nearly reached its final proportion to body size (see http://ehd.org/resources_bpd_documentation_english.php). The assignation of this week to the fourth or third LMP month is debatable (see http://en.wikipedia.org/wiki/File:Prenatal_development_table.svg).
Fetal stage when the fetus is over 12 and under 13 weeks of development.
Fetal stage when the fetus is over 13 and under 14 weeks of development.
Fetal stage when the fetus is over 14 and under 15 weeks of development.
Fetal stage when the fetus is over 15 and under 16 weeks of development.
The assignation of this week to the fifth or fourth LMP month is debatable (see http://en.wikipedia.org/wiki/File:Prenatal_development_table.svg).
Fetal stage when the fetus is over 16 and under 17 weeks of development.
Fetal stage when the fetus is over 17 and under 18 weeks of development.
Fetal stage when the fetus is over 18 and under 19 weeks of development.
Fetal stage when the fetus is over 19 and under 20 weeks of development.
The cochlea has reached adult size within the fully developed inner ear (see http://ehd.org/resources_bpd_documentation_english.php). The assignation of this week to the sixth or fifth LMP month is debatable (see http://en.wikipedia.org/wiki/File:Prenatal_development_table.svg).
Fetal stage when the fetus is over 20 and under 21 weeks of development.
The lungs gain some ability to breathe air. This stage is considered the age of viability because survival outside the womb becomes possible for some fetuses (see http://ehd.org/resources_bpd_documentation_english.php).
Fetal stage when the fetus is over 21 and under 22 weeks of development.
Fetal stage when the fetus is over 22 and under 23 weeks of development.
Fetal stage when the fetus is over 23 and under 24 weeks of development.
The eyelids reopen (see http://ehd.org/resources_bpd_documentation_english.php).
Fetal stage when the fetus is over 24 and under 25 weeks of development.
The assignation of this week to the seventh or sixth LMP month is debatable (see http://en.wikipedia.org/wiki/File:Prenatal_development_table.svg).
Fetal stage when the fetus is over 25 and under 26 weeks of development.
Fetal stage when the fetus is over 26 and under 27 weeks of development.
Fetal stage when the fetus is over 27 and under 28 weeks of development.
Fetal stage when the fetus is over 28 and under 29 weeks of development.
The assignation of this week to the eighth or seventh LMP month is debatable (see http://en.wikipedia.org/wiki/File:Prenatal_development_table.svg).
Fetal stage when the fetus is over 29 and under 30 weeks of development.
Fetal stage when the fetus is over 30 and under 31 weeks of development.
Fetal stage when the fetus is over 31 and under 32 weeks of development.
Fetal stage when the fetus is over 32 and under 33 weeks of development.
The assignation of this week to the eighth or ninth LMP month is debatable (see http://en.wikipedia.org/wiki/File:Prenatal_development_table.svg).
Fetal stage when the fetus is over 33 and under 34 weeks of development.
Fetal stage when the fetus is over 34 and under 35 weeks of development.
Fetal stage when the fetus is over 35 and under 36 weeks of development.
Fetal stage when the fetus is over 36 and under 37 weeks of development.
Fetal stage when the fetus is over 37 weeks of development and until birth.
The assignation of this week to the ninth or tenth LMP month is debatable (see http://en.wikipedia.org/wiki/File:Prenatal_development_table.svg).
38th week post-fertilization and over stage
Human developmental stage that covers the period from birth until 12 years old.
Immature stage that refers to child who is over 2 and under 13 years old.
Immature stage that refers to a newborn who is under 32 days old.
Immature stage that refers to an infant who is over 31 days and is under 24 months old.
Child stage that refers to a child who is over 24 months and under 6 years old.
Child stage that refers to a child who is over 6 and under 13 years old.
Mature stage that refers to an adolescent who is over 13 and under 19 years old.
Human developmental stage that refers to an adult who is over 19.
Adult stage that refers to an adult who is under 45.
Early adulthood that refers to an adult who is under 25.
Early adulthood that refers to an adult who is over 25 and under 45.
Adult stage that refers to an adult who is over 45.
Late adulthood that refers to an adult who is over 45 and under 65.
Late adulthood that refers to an adult who is over 65.
Aged stage that refers to an adult who is under 80.
Aged stage that refers to an adult who is over 80 years old.
Child stage that refers to a child who is over 2 and under 3 years old.
Child stage that refers to a child who is over 3 and under 4 years old.
Child stage that refers to a child who is over 4 and under 5 years old.
Child stage that refers to a child who is over 5 and under 6 years old.
Child stage that refers to a child who is over 6 and under 7 years old.
Child stage that refers to a child who is over 7 and under 8 years old.
Child stage that refers to a child who is over 8 and under 9 years old.
Child stage that refers to a child who is over 9 and under 10 years old.
Child stage that refers to a child who is over 10 and under 11 years old.
Child stage that refers to a child who is over 11 and under 12 years old.
Child stage that refers to a child who is over 12 and under 13 years old.
Adolescent stage that refers to an adolescent who is over 13 and under 14 years old.
Adolescent stage that refers to an adolescent who is over 14 and under 15 years old.
Adolescent stage that refers to an adolescent who is over 15 and under 16 years old.
Adolescent stage that refers to an adolescent who is over 16 and under 17 years old.
Adolescent stage that refers to an adolescent who is over 17 and under 18 years old.
Adolescent stage that refers to an adolescent who is over 18 and under 19 years old.
Young adult stage that refers to an adult who is over 19 and under 20 years old.
Young adult stage that refers to an adult who is over 20 and under 21 years old.
Young adult stage that refers to an adult who is over 21 and under 22 years old.
Young adult stage that refers to an adult who is over 22 and under 23 years old.
Young adult stage that refers to an adult who is over 23 and under 24 years old.
Young adult stage that refers to an adult who is over 24 and under 25 years old.
Adult stage that refers to an adult who is over 25 and under 26 years old.
Adult stage that refers to an adultwho is over 26 and under 27 years old.
Adult stage that refers to an adult who is over 27 and under 28 years old.
Adult stage that refers to an adult who is over 28 and under 29 years old.
Adult stage that refers to an adult who is over 29 and under 30 years old.
Adult stage that refers to an adult who is over 30 and under 31 years old.
Adult stage that refers to an adult who is over 31 and under 32 years old.
Adult stage that refers to an adult who is over 32 and under 33 years old.
Adult stage that refers to an adult who is over 33 and under 34 years old.
Adult stage that refers to an adult who is over 34 and under 35 years old.
Adult stage that refers to an adult who is over 35 and under 36 years old.
Adult stage that refers to an adult who is over 36 and under 37 years old.
Adult stage that refers to an adult who is over 37 and under 38 years old.
Adult stage that refers to an adult who is over 38 and under 39 years old.
Adult stage that refers to an adult who is over 39 and under 40 years old.
Adult stage that refers to an adult who is over 40 and under 41 years old.
Adult stage that refers to an adult who is over 41 and under 42 years old.
Adult stage that refers to an adult who is over 42 and under 43 years old.
Adult stage that refers to an adult who is over 43 and under 44 years old.
Adult stage that refers to an adult who is over 44 and under 45 years old.
Middle aged stage that refers to an adult who is over 45 and under 46 years old.
Middle aged stage that refers to an adult who is over 46 and under 47 years old.
Middle aged stage that refers to an adult who is over 47 and under 48 years old.
Middle aged stage that refers to an adult who is over 48 and under 49 years old.
Middle aged stage that refers to an adult who is over 49 and under 50 years old.
Middle aged stage that refers to an adult who is over 50 and under 51 years old.
Middle aged stage that refers to an adult who is over 51 and under 52 years old.
Middle aged stage that refers to an adult who is over 52 and under 53 years old.
Middle aged stage that refers to an adult who is over 53 and under 54 years old.
Middle aged stage that refers to an adult who is over 54 and under 55 years old.
Middle aged stage that refers to an adult who is over 55 and under 56 years old.
Middle aged stage that refers to an adult who is over 56 and under 57 years old.
Middle aged stage that refers to an adult who is over 57 and under 58 years old.
Middle aged stage that refers to an adult who is over 58 and under 59 years old.
Middle aged stage that refers to an adult who is over 59 and under 60 years old.
Middle aged stage that refers to an adult who is over 60 and under 61 years old.
Middle aged stage that refers to an adult who is over 61 and under 62 years old.
Middle aged stage that refers to an adult who is over 62 and under 63 years old.
Middle aged stage that refers to an adult who is over 63 and under 64 years old.
Middle aged stage that refers to an adult who is over 64 and under 65 years old.
Adult stage that refers to an adult who is over 65 and under 66 years old.
Adult stage that refers to an adult who is over 66 and under 67 years old.
Adult stage that refers to an adult who is over 67 and under 68 years old.
Adult stage that refers to an adult who is over 68 and under 69 years old.
Adult stage that refers to an adult who is over 69 and under 70 years old.
Adult stage that refers to an adult who is over 70 and under 71 years old.
Adult stage that refers to an adult who is over 71 and under 72 years old.
Adult stage that refers to an adult who is over 72 and under 73 years old.
Adult stage that refers to an adult who is over 73 and under 74 years old.
Adult stage that refers to an adult who is over 74 and under 75 years old.
Adult stage that refers to an adult who is over 75 and under 76 years old.
Adult stage that refers to an adult who is over 76 and under 77 years old.
Adult stage that refers to an adult who is over 77 and under 78 years old.
Adult stage that refers to an adult who is over 78 and under 79 years old.
Adult stage that refers to an adult who is over 79 and under 80 years old.
Infant stage that refers to an infant who is over 1 and under 2 months old.
Infant stage that refers to an infant who is over 2 and under 3 months old.
Infant stage that refers to an infant who is over 3 and under 4 months old.
Infant stage that refers to an infant who is over 4 and under 5 months old.
Infant stage that refers to an infant who is over 5 and under 6 months old.
Infant stage that refers to an infant who is over 6 and under 7 months old.
Infant stage that refers to an infant who is over 7 and under 8 months old.
Infant stage that refers to an infant who is over 8 and under 9 months old.
Infant stage that refers to an infant who is over 9 and under 10 months old.
Infant stage that refers to an infant who is over 10 and under 11 months old.
Infant stage that refers to an infant who is over 11 and under 12 months old.
Infant stage that refers to an infant who is over 12 and under 13 months old.
Infant stage that refers to an infant who is over 13 and under 14 months old.
Infant stage that refers to an infant who is over 14 and under 15 months old.
Infant stage that refers to an infant who is over 15 and under 16 months old.
Infant stage that refers to an infant who is over 16 and under 17 months old.
Infant stage that refers to an infant who is over 17 and under 18 months old.
Infant stage that refers to an infant who is over 18 and under 19 months old.
Infant stage that refers to an infant who is over 19 and under 20 months old.
Infant stage that refers to an infant who is over 20 and under 21 months old.
Infant stage that refers to an infant who is over 21 and under 22 months old.
Infant stage that refers to an infant who is over 22 and under 23 months old.
Infant stage that refers to an infant who is over 23 and under 24 months old.
Fetal stage that refers to the third month of gestation starting from the last menstrual period (LMP).
Fetal stage that refers to the fourth month of gestation starting from the last menstrual period (LMP).
Fetal stage that refers to the fifth month of gestation starting from the last menstrual period (LMP).
Fetal stage that refers to the sixth month of gestation starting from the last menstrual period (LMP).
Fetal stage that refers to the seventh month of gestation starting from the last menstrual period (LMP).
Fetal stage that refers to the eighth month of gestation starting from the last menstrual period (LMP).
Fetal stage that refers to the ninth month of gestation starting from the last menstrual period (LMP).
Human developmental stage that refers to a sexually mature human.
The morula stage is the later part of Carnegie stage 02 when the cells have coalesced into a mass but the blastocystic cavity has not formed. Formation of the cavity marks the beginning of Carnegie stage 03.
Aged stage that refers to an adult who is over 80 and under 81 years old.
Aged stage that refers to an adult who is over 81 and under 82 years old.
Aged stage that refers to an adult who is over 82 and under 83 years old.
Aged stage that refers to an adult who is over 83 and under 84 years old.
Aged stage that refers to an adult who is over 84 and under 85 years old.
Aged stage that refers to an adult who is over 85 and under 86 years old.
Aged stage that refers to an adult who is over 86 and under 87 years old.
Aged stage that refers to an adult who is over 87 and under 88 years old.
Aged stage that refers to an adult who is over 88 and under 89 years old.
Aged stage that refers to an adult who is over 89 and under 90 years old.
Aged stage that refers to an adult who is over 90 and under 91 years old.
Aged stage that refers to an adult who is over 91 and under 92 years old.
Aged stage that refers to an adult who is over 92 and under 93 years old.
Aged stage that refers to an adult who is over 93 and under 94 years old.
Aged stage that refers to an adult who is over 94 and under 95 years old.
Aged stage that refers to an adult who is over 95 and under 96 years old.
Aged stage that refers to an adult who is over 96 and under 97 years old.
Aged stage that refers to an adult who is over 97 and under 98 yers old.
Aged stage that refers to an adult who is over 98 and under 99.
Aged stage that refers to an adult who is over 99 and under 100 years old.
A life cycle stage that starts at sexual maturity of the human adult, and ends before senescence.
We start this stage at 15 years to follow the Human Phenotype Ontology defintion of adult onset (HP:0003581), and we ends the stage at 60 years, the start of late onset in HPO (HP:0003584).
Late adult stage that refers to an individu who is over 60 and starts to have some age-related impairments.
Age-related hearing loss (presbycusis) is one of the most common conditions affecting older and elderly adults(see https://www.nidcd.nih.gov/health/age-related-hearing-loss#1). We follow Human Phenotype Ontology (HPO) late onset definition (HP:0003584) to start this stage at 60 years.
Aged stage that refers to an adult who is over 100 and under 101 years old.
Aged stage that refers to an adult who is over 101 and under 102 years old.
Aged stage that refers to an adult who is over 102 and under 103 years old.
Aged stage that refers to an adult who is over 103 and under 104 years old.
Aged stage that refers to an adult who is over 104 and under 105 years old.
Aged stage that refers to an adult who is over 105 and under 106 years old.
Aged stage that refers to an adult who is over 106 and under 107 years old.
Human stage that refers to an individual who is over 0 and under 10 years old.
Human stage that refers to an individual who is over 10 and under 20 years old.
Human stage that refers to an individual who is over 20 and under 30 years old.
Human stage that refers to an individual who is over 30 and under 40 years old.
Human stage that refers to an individual who is over 40 and under 50 years old.
Human stage that refers to an individual who is over 50 and under 60 years old.
Human stage that refers to an individual who is over 60 and under 70 years old.
Human stage that refers to an individual who is over 70 and under 80 years old.
Human stage that refers to an individual who is over 80 and under 90 years old.
Human stage that refers to an individual who is over 90 and under 100 years old.
Human stage that refers to a human who is over 100 and under 110 years old.
Child stage that refers to a child who is over 12 and under 24 months old.
Aged stage that refers to an adult who is over 100 years old.
Aged stage that refers to an adult who is over 107 and under 108 years old.
Aged stage that refers to an adult who is over 108 and under 109 years old.
Aged stage that refers to an adult who is over 109 and under 110 years old.
Aged stage that refers to an adult who is over 110 and under 111 years old.
Aged stage that refers to an adult who is over 111 and under 112 years old.
Aged stage that refers to an adult who is over 112 and under 113 years old.
Aged stage that refers to an adult who is over 113 and under 114 years old.
Aged stage that refers to an adult who is over 114 and under 115 years old.
Infant stage that refers to an infant who is over 31 days and is under 12 months old.
HPO (Human Phenotype Ontology) considers HP:0003581 (adult onset) as 'at the age of 16 years or later', but this adult stage directly follows the pediatric onset (HP:0410280) defined 'as before the age of 15 years' (see https://github.com/obophenotype/human-phenotype-ontology/issues/6099). To be consistent, we consider adult stage as starting at 15 years.
Human developmental stage that covers the first period from birth, with breast feeding and/or bottled substitute, and that stops at language acquisition.
The definition of an age for human weaning is difficult to define due to individual and cultural variations. The natural age of weaning in humans could be 2.5 years, with maximum 7.0 years (see https://www.health-e-learning.com/articles/A_Natural_Age_of_Weaning.pdf), but we decide to stop this period at 1 year-old, before usually language acquisition.
Immature stage that refers to an infant who is over 28 days and is under 12 months old.
We consider that this pediatric stage refers to an infant who is over 28 days and under 12 months old, to follow HPO (Human Phenotype Ontology) which considers infant as between 28 days to one year of life, based on the ethymology of the word (infant), meaning not speaking, see HP:0003593 (Infantile onset) and see Peter Robinson's comment [[HPO:probinson] at https://github.com/obophenotype/human-phenotype-ontology/issues/5119#issuecomment-578882539.
Immature stage that refers to a human newborn within the first 28 days of life.
We follow HPO (Human Phenotype Ontology) definition for neonatal period, see HP:0003623 (Neonatal onset) Onset of signs or symptoms of disease within the first 28 days of life..
Human developmental stage that covers the period from newborn stage and until 14 years old.
We created this class to map the pediatric onset as defined by HPO (Human Phenotype Ontology).
Human stage that refers to a child who is over 12 months and under 5 years old.
We follow HPO (Human Phenotype Ontology) definition for child period, see HP:0011463 (Childhood onset).
A prime adult stage that refers to an adult who is under 40 years old.
Late adulthood that refers to an adult who is over 40 and under 60 years old.
A young adult stage that refers to an adult who is over 15 and under 20 years old.
Child stage that refers to a child who is over 2 and under 5 years old.
We define here a child who is over 2 years and less than 5 years, and weaned.
Pediatric stage that refers to a human who is over 5 and under 15 years old.
Late adult stage that refers to an adult who is under 80 years old.
Infant stage that refers to an infant who is over 28 days and under 2 months old.
Human developmental stage that covers the whole of human life post birth.