article physiology animal 334 Animals 312 metabolism 186 male 138 female 132 Male 131 nonhuman 130 Female 120 controlled study 118 human 116 Humans 105 drug effect 104 genetics 99 priority journal 96 Argentina 74 growth, development and aging 67 chemistry 52 comparative study 51 Animalia 47 animal experiment 47 animal cell 46 cytology 46 histology 46 adult 42 mouse 41 time 41 Time Factors 39 unclassified drug 39