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Nucleosomal DNA fragmentation assay: (A) “Yellow” zucchini; and (B) “Light Green zucchini. HL-60 cells were exposed to various concentrations of zucchini epicarp and mesocarp for 5 h. DNA was extracted from cells and was subject to 2% agarose gel electrophoresis at 50 V for 90 min. M: DNA size marker.
