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Anti‐GCa activity of Hedyotis diffusa Willd ethanol extracts. The cytotoxic effect of ARIs was determined using WST‐1 cytotoxicity assays conducted on GCa cells (AGS, upper; SCM‐1, middle; and MKN45, lower). The mean absorbance (450 nm) showed the viability of GCa cells treated with increasing concentrations (0–1000 μg/ml) of extracts for 48 h
