Female female 1,154 article 985 Animals 891 Male 816 nonhuman 719 controlled study 698 male 696 priority journal 691 human 561 Humans 517 animal 485 animal experiment 459 adult 330 Rats 312 rat 298 animal cell 294 Mice 270 Adult 266 mouse 263 physiology 253 animal tissue 248 Argentina 240 metabolism 237 animal model 199 protein expression 189 Animal 184 Article 174 genetics 172 Middle Aged 168