Animals Female animal article female male 242 Male 238 physiology 168 metabolism 132 nonhuman 129 genetics 128 Argentina 116 controlled study 108 mouse 99 Mice 95 histology 83 animal experiment 78 priority journal 78 growth, development and aging 72 animal cell 68 drug effect 68 human 66 parasitology 64 Humans 59 Animalia 52 animal tissue 52 classification 52 chemistry 50 animal model 48 cytology 45