Male animal experiment mouse nonhuman priority journal Animals 219 Mice 219 controlled study 198 male 198 article 181 animal tissue 130 animal model 120 animal cell 83 Female 77 animal 71 female 63 Mice, Inbred C57BL 58 protein expression 58 metabolism 56 Article 52 unclassified drug 45 Mice, Inbred BALB C 43 Mice, Knockout 41 gene expression 41 drug effect 37 Humans 36 genetics 34 in vivo study 32 hippocampus 31 Mus 30