STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet

The yolk platelets of mature eggs and young embryonic cells of all amphibian species studied (Rana pipiens, Triturus pyrrhogaster, Diemictylus viridescens, Rana nigromaculata, and Bufo vulgaris) have a superficial layer of fine particles or fibrils (ca. 50 A in diameter), a central main body with a...

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Autor principal: Karasaki, Shuichi
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1963
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2106284/
https://www.ncbi.nlm.nih.gov/pubmed/13962448
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author Karasaki, Shuichi
author_facet Karasaki, Shuichi
author_sort Karasaki, Shuichi
collection PubMed
description The yolk platelets of mature eggs and young embryonic cells of all amphibian species studied (Rana pipiens, Triturus pyrrhogaster, Diemictylus viridescens, Rana nigromaculata, and Bufo vulgaris) have a superficial layer of fine particles or fibrils (ca. 50 A in diameter), a central main body with a crystalline lattice structure, and an enclosing membrane approximately 70 A in thickness. Electron micrographs of the main body reveal hexagonal net (spacing ca. 70 A), square net (spacing ca. 80 A), and parallel band (spacing from 35 to 100 A but most frequent at ca. 70 A) patterns. The crystalline structure is believed to be a simple hexagonal lattice made of closely packed cylindrical rods. Each rod is estimated to be about 80 A in diameter and 160 A in length.
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spelling pubmed-21062842008-05-01 STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet Karasaki, Shuichi J Cell Biol Article The yolk platelets of mature eggs and young embryonic cells of all amphibian species studied (Rana pipiens, Triturus pyrrhogaster, Diemictylus viridescens, Rana nigromaculata, and Bufo vulgaris) have a superficial layer of fine particles or fibrils (ca. 50 A in diameter), a central main body with a crystalline lattice structure, and an enclosing membrane approximately 70 A in thickness. Electron micrographs of the main body reveal hexagonal net (spacing ca. 70 A), square net (spacing ca. 80 A), and parallel band (spacing from 35 to 100 A but most frequent at ca. 70 A) patterns. The crystalline structure is believed to be a simple hexagonal lattice made of closely packed cylindrical rods. Each rod is estimated to be about 80 A in diameter and 160 A in length. The Rockefeller University Press 1963-07-01 /pmc/articles/PMC2106284/ /pubmed/13962448 Text en Copyright © 1963 by The Rockefeller Institute Press This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Karasaki, Shuichi
STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet
title STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet
title_full STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet
title_fullStr STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet
title_full_unstemmed STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet
title_short STUDIES ON AMPHIBIAN YOLK : 1. The Ultrastructure of the Yolk Platelet
title_sort studies on amphibian yolk : 1. the ultrastructure of the yolk platelet
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2106284/
https://www.ncbi.nlm.nih.gov/pubmed/13962448
work_keys_str_mv AT karasakishuichi studiesonamphibianyolk1theultrastructureoftheyolkplatelet

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