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. 2015 Jan 8;5:7689. doi: 10.1038/srep07689

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Schematic of mammalian spermatogenesis (on the left) with the mating times (days) used in this study and the first cell cycle in the zygote (on the right). The approximate periods of DNA replication, DNA repair efficiency, protamine deposition, MLP-induced lesions, and maternal DNA repair are shown. See text for further explanation. A_s: A single; A_p: A pair; A_al: A aligned; In: Intermediate; Pl: preleptotene; L: leptotene; Z: zygotene; P: pachytene; D: Diplotene; MI: metaphase I; MII: metaphase II; E: elongating; Cg: condensing; Cd: condensed.