cell proliferation human 82 human cell nonhuman controlled study 75 Animals 66 Humans 66 mouse 59 animal cell 57 article 53 priority journal 47 Mice 45 protein expression 45 animal experiment 44 Cell Proliferation 43 animal model 40 in vivo study 32 unclassified drug 32 in vitro study 29 Cell Line, Tumor 27 animal 26 metabolism 26 animal tissue 25 male 24 apoptosis 22 female 21 Article 20 protein function 20 signal transduction 19 cell survival 18