Animals Male animal tissue controlled study nonhuman 403 male 370 animal experiment 318 article 313 priority journal 308 mouse 183 Mice 173 animal model 150 animal cell 138 animal 134 Female 133 female 128 rat 123 Rats 119 protein expression 111 metabolism 100 Article 90 Rats, Sprague-Dawley 79 unclassified drug 78 physiology 76 messenger RNA 72 enzyme activity 66 immunohistochemistry 58 drug effect 54 Immunohistochemistry 53 gene expression 52