Male animal tissue male 110 metabolism nonhuman 110 animal 108 Animals 106 controlled study 100 animal experiment 81 priority journal 77 Article 68 mouse 59 physiology 59 Mice 47 article 42 drug effects 39 animal cell 38 genetics 37 female 33 Female 29 protein expression 29 gene expression 28 immunohistochemistry 28 messenger RNA 28 drug effect 27 unclassified drug 27 Hippocampus 25 hippocampus 25 C57BL mouse 22 Mice, Inbred C57BL 22