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Correlation of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay, lactate dehydrogenase (LDH) assay and Annexin V-fluorescein isothiocyanate (FITC)/propidium iodide (PI) staining of drug treatment on polydimethylsiloxane (PDMS) multi-channel cell chip cultured HeLa cells.
