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Photocytotoxicity of Hyp in the MCF-7 cells assessed by the MTT assay. Cells were incubated with various concentrations (0–1 μM) of Hyp for 16 h before photoirradiation under light emitted from a 100-watt quartz-halogen lamp with 500 to 590 long-pass filter at various light doses (0∼10.20 J/cm2)
