Male animal model nonhuman priority journal Animals 218 animal experiment 214 controlled study 204 male 196 article 190 Mice 144 mouse 138 animal tissue 128 animal cell 96 Female 70 Rats 62 rat 62 female 60 protein expression 60 animal 50 unclassified drug 44 Humans 40 drug effect 38 in vivo study 36 metabolism 36 Article 34 Mice, Inbred BALB C 34 human 32 Immunohistochemistry 28 Mice, Inbred C57BL 28 drug mechanism 28