Recent Progress in the Structure, Origin, Composition, and Function of Cortical Granules in Animal Egg

摘要: Publisher Summary This chapter discusses the recent progress in structure, origin, composition, and function of cortical granules animal egg. Cytochemical morphological studies have shown presence or alveoli oocytes many animals but not all. Where are present, they show a great diversity their size, number, ultrastructure. They may even vary size structure different regions egg same species. The secretory organelles that contain electron-dense material surrounded by membrane. Their contents either homogeneous heterogeneous appearance because components. results various cytochemical autoradiographic revealed consists carbohydrates proteins; some enzymes also been reported granules. near surface, which as result fertilization expelled to participate formation membranous simply explode release substance constituting gelatinous coat around egg, is widespread occurrence.