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Cytotoxic effects of herbal extracts on breast cancer cells, PBMCs and MCF-10A cell line. The cells were treated with various concentrations (100–500 µg/mL) of H. cordata and P. ribesioides extracts for 24, 48 and 72 h. Cell viability was evaluated by comparing with 0.5% DMSO treated control cell, after 24, 48 and 72 h of incubation. Results are presented as mean ± SD from three independent experiments.
