article metabolism nonhuman priority journal animal 216 controlled study 206 Animals 192 animal cell 145 genetics 121 physiology 117 drug effect 105 mouse 105 Mice 99 animal experiment 91 animal tissue 83 unclassified drug 82 female 80 human 73 Humans 71 protein expression 70 chemistry 69 Female 68 rat 62 Rats 60 male 60 signal transduction 59 Male 54 cytology 53 Animalia 51 enzymology 50