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Intracellular production of reactive oxygen species in NCI-H929 cells. Results following 1 h incubation with 0.5, 1, 2, 4 × IC50 of chloroform fractions of T. vulgaris (TCF) and A. lappa (ACF), stained with 2′,7′-dichlorodihydrofluorescein diacetate (H2DCFH-DA) and analyzed by flow cytometry. Control: NCI-H929 cell without treatment.
