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CORTICAL GRANULES PERSISTING IN GERM CELLS OF XENOPUS LAEVIS AFTER THE CLEAVAGE STAGES
Author(s) -
IKENISHI KOHJI
Publication year - 1980
Publication title -
development, growth and differentiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.864
H-Index - 66
eISSN - 1440-169X
pISSN - 0012-1592
DOI - 10.1111/j.1440-169x.1980.00669.x
Subject(s) - xenopus , somatic cell , ultrastructure , biology , cleavage (geology) , electron microscope , microbiology and biotechnology , anatomy , tadpole (physics) , staining , germ , biochemistry , genetics , paleontology , physics , particle physics , fracture (geology) , gene , optics
Cortical granules were demonstrated, in two successive Epon sections (0.7 μm thick) stained with PAS reagent and the triple staining method respectively, to persist beyond the cleavage stages of development to the tadpole stages in Xenopus laevis. They were also examined by electron microscope. The granules which are similar both cytochemically and ultrastructurally to the cortical granules of the unfertilized eggs were observed not only in germ cells, pPGCs and PGCs, but also in somatic cells at all the stages examined. An ultrastructural similarity between the granules found in the PGCs at the tadpole stages and chromatoid body was discussed.