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. 2012 Mar 21;1(5):446–457. doi: 10.1242/bio.2012844

Fig. 2. Elongating spermatid nuclei in succeeding steps of human spermiogenesis.

Fig. 2.

Types 5–8 have tentatively been assigned to the spermatid morphology nomenclature of Clermont (Clermont, 1963). (A) Gradual development of an initially DAPI-intense cap-like structure (arrows) with the implantation fossa indicating the nuclear posterior pole (arrow head). (B) Localization of acrosin IF staining; the inset (dotted square) shows the DAPI image. (C) Nucleosome staining (ab #32); the upper inset shows the DAPI image and the lower image the nucleosome staining. (D) P1 staining; the upper inset shows the DAPI image and the lower inset P1 staining. Scale bar: 10 µm.