Ultrastructural evidence for the presence of actin filaments in mouse eggs at fertilization |
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Authors: | Jolanta Karasiewicz Maria Salomea Soltyńska |
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Institution: | (1) Department of Embryology, Zoological Institute, University of Warsaw, 00-927 Warszawa, Poland;(2) Department of Cytology, Zoological Institute, University of Warsaw, 00-927 Warszawa, Poland |
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Abstract: | Summary Mouse eggs at fertilization were permeated with glycerol solutions and then reacted with heavy meromyosin to show actin filaments by electron microscopy. The meiotic area of the egg surface is devoid of microvilli and is supported by a thick layer (0.6–0.8 m in width) of submembranous filaments. A much thinner layer (less than 0.3 m) is present in the remaining non-meiotic microvillous area and underlying its membrane is a very thick layer of cross-filaments and filament bundles. |
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Keywords: | Mouse egg Actin filaments Cortical layer |
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