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Changes of Bax (a–d) and Bcl-XL (e–h) expression and TUNEL staining (i–l) of germ cells in seminiferous epithelia
(a, e, i) Control; (b, f, j) Quercetin (75 mg/kg); (c, g, k) PNMC (100 mg/kg); (d, h, l) PNMC+quercetin. Arrows: positive cells; Arrowheads: negative cells
