animal tissue male nonhuman 114 physiology Animals 112 animal 110 controlled study 98 Male 88 animal experiment 78 metabolism 77 Article 76 priority journal 75 mouse 52 animal cell 43 adult 42 female 39 article 38 Mice 36 drug effects 31 drug effect 28 cytology 27 Female 25 animal behavior 24 genetics 23 protein expression 22 hippocampus 21 brain 20 immunohistochemistry 20 nerve cell 20 Hippocampus 19