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Percentage motility of Sprague–Dawley epididymal sperm after dilution in TL-HEPES, Tris, mKRB, LEY, and PBS extenders and storage at 22 °C for 6, 24, 32, 48, and 72 h. Data are presented as mean ± SEM (n = 6). *, Values within the same group are significantly (P < 0.05) different from each other.
