ゴカイ卵の受精に伴なう表層微細構造の変化

概要

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Unfertilized, fertilized and activated eggs of Nereis limbata were fixed with 3% glutaraldehyde in sea water for 1 hour and postfixed with 1% OsO_4 in sea water for 30 minutes. Many microvilli through the chorion and a thick layer of cortical granules with fibrous structure were observed in the cortical region of unfertilized eggs. After fertilization, the cortical granules break down, and the fibrous substance are extruded into the perivitelline space. The fibrous substance passes through the pores of the chorion and forms a thick jelly layer around the eggs.
社団法人日本動物学会の論文
1969-03-15