Animals Male male 1,486 article 1,205 nonhuman 1,148 animal 906 Female 887 controlled study 883 female 802 priority journal 771 animal experiment 755 animal tissue 483 Mice 430 physiology 429 mouse 424 animal cell 362 Rats 344 rat 328 metabolism 313 Argentina 307 animal model 292 Animalia 244 Article 242 genetics 241 Humans 237 human 219 protein expression 219 unclassified drug 211 adult 174 growth, development and aging 169