On the diversity of sperm histones in the vertebrates: II. A cytochemical study of the basic protein transitions during spermiogenesis in the cartilaginous fish Hydrolagus colliei

Wiley - Tập 198 Số 1 - Trang 109-113 - 1976
Niels C. Bols1, Harold E. Kasinsky1,2
1Department of Zoology, University of British Columbia, Vancouver, B. C., Canada, V6T 1 W5
2Supported by a grant from the National Research Council of Canada.

Tóm tắt

AbstractSpermiogenesis in the ratfish (Hydrolagus colliei) is characterized by unusual changes in the basic proteins of the nucleus. Cytochemical analysis indicates that early spermatids in this cartilaginous fish contain the somatic type of histones. However, late spermatids contain the salmon type of sperm histone whereas spermatozoa display the mouse/grasshopper type designated by Bloch ('69). Such an unusual cytochemical shift from protamine in the spermatid to “stable protamine” in the sperm has not been documented heretofore.

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Tài liệu tham khảo

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