antiproliferative activity human 42 controlled study 38 Humans 36 human cell 34 unclassified drug 32 Cell Proliferation 28 article 28 nonhuman 28 cell proliferation 24 antineoplastic agent 22 Animals 20 Antineoplastic Agents 20 Article 20 drug effects 20 drug synthesis 20 in vitro study 20 Cell Line, Tumor 18 antineoplastic activity 16 chemistry 16 drug screening 16 drug structure 16 apoptosis 14 metabolism 14 tumor cell line 14 animal 12 animal cell 12 mouse 12 priority journal 12 structure activity relation 12