animal cell cell culture nonhuman 184 article 138 Animals 136 controlled study 128 priority journal 112 Cells, Cultured 86 animal 80 mouse 78 Mice 72 metabolism 66 rat 62 protein expression 58 Rats 56 animal experiment 56 female 56 Female 54 human 52 Humans 48 Animalia 44 unclassified drug 44 animal model 36 cell proliferation 36 cytology 36 in vitro study 36 Article 32 signal transduction 32 genetics 30 human cell 30