Male animal female male 587 Female 567 Animals 555 article 276 physiology 249 Argentina 198 nonhuman 187 genetics 168 growth, development and aging 161 controlled study 143 metabolism 140 Article 126 classification 114 adult 107 animal experiment 100 priority journal 95 anatomy and histology 88 human 87 histology 84 parasitology 82 Humans 67 body size 62 animal tissue 57 Ecosystem 56 ecosystem 56 mouse 56 Body Size 53