title: The ultrastructure of the nucleus of the developing amphibian egg.
mesh_terms: D000663:Amphibians; D000818:Animals; D002466:Cell Nucleolus; D002467:Cell Nucleus; D002875:Chromosomes; D005260:Female; D008540:Meiosis; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology*