animal cell controlled study human 262 human cell nonhuman 262 Animals 202 Humans 202 article 186 priority journal 186 mouse 145 Mice 123 unclassified drug 120 protein expression 112 animal experiment 85 animal 76 animal model 74 metabolism 72 female 70 Article 68 signal transduction 61 male 57 Cell Line 56 cell proliferation 50 Cell Line, Tumor 47 in vitro study 46 Female 44 animal tissue 44 Cercopithecus aethiops 42 Male 42 protein function 42