. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ^ ^v ?.»- ' -"^i n? . -vV r "^ . V â . ** J i!*&i .35I. '-â '"»» (tT^jp^* i i t ^f^ Ik 2r"- '^' ' FE tt^tlsK^f^Uih.^i Figure 10. Spermatozoon associated with apical surface of a cortical projection (CP) via its acrosomal process (AF) in SBTI-treated Abracia zygote seven minutes after initial minimal insemination, fixed 2 min after subsequent re-insemination with excess sperm. Fertilization envelope (FE), periviteUine space (PV), sperm nucleus (SN). 37,800x. Inset: Photomicrograph of zygote re-insem
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ^ ^v ?.»- ' -"^i n? . -vV r "^ . V â . ** J i!*&i .35I. '-â '"»» (tT^jp^* i i t ^f^ Ik 2r"- '^' ' FE tt^tlsK^f^Uih.^i Figure 10. Spermatozoon associated with apical surface of a cortical projection (CP) via its acrosomal process (AF) in SBTI-treated Abracia zygote seven minutes after initial minimal insemination, fixed 2 min after subsequent re-insemination with excess sperm. Fertilization envelope (FE), periviteUine space (PV), sperm nucleus (SN). 37,800x. Inset: Photomicrograph of zygote re-inseminated 12 min after initial insem- ination. Zygote nucleus (ZN), refertilizing spermatozoon (RS). 450X. From Longo et al. (1974), reprinted with permission of Academic Press, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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