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Cytotoxicity of Grewia flava extracts (ethanol, 60: water, 40 extracts) at 0 to 35 mg/mL in confluent HeLa cells determined by MTT assay. Untreated cells at 100% cell viability were the control. Values are mean ± standard error (n = 3). Significant differences among the concentrations are indicated by different letters (p < 0.05, Tukey-Kramer’s range test).
