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The effect of FT-EtOH extract and HU (25 μg mL−1) on induction of THb of K562 cells at different time intervals. K562 cells were treated with indicated concentrations of FT extract and HU for 6 days. The Hb-positive cells were stained by TMB assay. The results are expressed as mean ± SD of three cultures. The data are representative of three separate experiments.
