Male male 1,119 article 924 Animals 841 Female 772 nonhuman 686 female 679 controlled study 637 priority journal 635 animal experiment 493 animal 481 human 480 Humans 433 adult 320 Rats 315 rat 302 physiology 271 animal tissue 260 Adult 247 Mice 228 animal cell 227 mouse 227 Animal 221 Argentina 215 metabolism 205 Support, Non-U.S. Gov't 185 Article 171 Middle Aged 158 animal model 151 genetics 151