Article 5 human 5 chemistry 4 controlled study 4 nonhuman 4 Humans 3 IC50 3 MTT assay 3 Plant Extracts 3 drug cytotoxicity 3 human cell 3 metabolism 3 plant extract 3 unclassified drug 3 Animals 2 Cell Line 2 Mice 2 Plasmodium falciparum 2 animal 2 animal cell 2 anthraquinone derivative 2 cell death 2 cell line 2 cyclooxygenase 2 2 drug effect 2 drug effects 2 drug screening 2 drug structure 2 drug synthesis 2 medicinal plant 2