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The fine structure of nuclei in mature sperm:I. Application of the langmuir trough-critical point method to histone-containing sperm nuclei

Authors
Journal
Journal of Ultrastructure Research
0022-5320
Publisher
Elsevier
Publication Date
Volume
36
Identifiers
DOI: 10.1016/s0022-5320(71)80101-6

Abstract

The fine structure of histone-containing sperm nuclei of the leopard frog, sea urchin, and goldfish, were studied by the Langmuir trough-critical point method. Striking similarities in nuclear fine structure were observed in these sperm. In each case, well separated, randomly distributed fibers of similar appearance and dimensions were the only structures seen. Measurements of nuclear fibers revealed mean diameters of 164 Å for the sea urchin, 171 Å for the goldfish, and 179 Å for the frog. The relationship of these diameters to previously reported fiber diameters in isolated nuclei and chromosomes is discussed.

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