animal human Animals 755 Humans 699 nonhuman 450 metabolism 397 article 295 controlled study 279 physiology 267 priority journal 238 genetics 224 mouse 222 Article 210 chemistry 199 Mice 198 female 190 unclassified drug 186 animal cell 172 Female 168 human cell 155 male 145 animal experiment 138 Male 131 protein expression 127 drug effects 114 pathology 113 drug effect 111 signal transduction 99 Review 98 Argentina 96