Histochemical studies on the yolk nucleus in the oogenesis of Indian Reptiles

Publisher Website
Google Scholar
Abstract
The yolk nucleus of the young oocyte of reptiles is situated in the juxta‐nuclear cytoplasm. It is a homogeneous spherical mass and histochemical tests indicate that it is rich in RNA and proteins. It constitutes a center of high synthetic activity. Lipid inclusions of diverse nature and mitochondria appear in abundance in association with the yolk nucleus. Eventually the yolk nucleus disintegrates and its RNA‐containing substance as well as the other inclusions are distributed throughout the cytoplasm. During yolk formation, lipid inclusions and mitochondria are absorbed by the cytoplasm but the yolk nucleus substance continues to persist among the growing yolk bodies which arise de novo from the cytoplasm. This occurs possibly under the activity of RNA‐containing substance of the yolk nucleus, mitochondria and lipid inclusions.
Keywords