apoptosis controlled study human human cell Humans 134 article 115 Apoptosis 112 priority journal 89 Cell Line, Tumor 74 protein expression 73 cell proliferation 65 unclassified drug 51 nonhuman 49 metabolism 47 female 46 Article 42 in vitro study 42 signal transduction 42 Animals 41 Mice 37 tumor cell line 37 Female 36 caspase 3 36 cell survival 36 cell death 35 male 33 drug effects 32 mouse 32 Cell Proliferation 31 animal cell 30