genetics human Humans 450 metabolism 326 controlled study 246 Animals 232 animal 232 nonhuman 214 priority journal 192 article 190 Article 174 female 152 Female 136 human cell 126 male 118 protein expression 114 unclassified drug 114 Male 108 chemistry 102 gene expression regulation 102 mouse 102 pathology 94 Mice 92 signal transduction 90 adult 88 animal cell 84 physiology 84 gene expression 82 protein function 76 drug effects 74