Female article female priority journal controlled study 305 nonhuman 257 Animals 228 Male 201 male 194 animal experiment 173 human 167 Humans 160 animal tissue 127 animal cell 123 Rats 111 rat 107 adult 106 Mice 102 mouse 101 Adult 90 animal model 89 protein expression 85 Rats, Sprague-Dawley 64 Middle Aged 60 clinical article 53 cell proliferation 51 Mice, Inbred BALB C 49 Aged 46 Animalia 46 aged 44