Adapted from figure 2 in [Li et al.](http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.0040002). This pathway was inferred from Homo sapiens pathway [http://www.wikipathways.org/index.php?title=Pathway:WP666&oldid=29740 WP666(r29740)] with a 86% conversion rate. fd8 18179280 PubMed Genes and (common) pathways underlying drug addiction PLoS Comput Biol 2008 Li CY Mao X Wei L substance dependence disease pathway PW:0001029 Pathway Ontology