Female Male animal female male 567 Animals 535 article 268 physiology 238 Argentina 196 nonhuman 167 genetics 163 growth, development and aging 156 metabolism 132 controlled study 125 Article 114 classification 112 adult 103 animal experiment 90 anatomy and histology 88 priority journal 87 human 83 histology 82 parasitology 80 Humans 63 body size 60 Ecosystem 56 ecosystem 56 Body Size 53 Chagas disease 53 Triatoma 53