Cytoplasmic cylinders in bullfrog oocytes.
D000818:Animals; D001001:Anura / Q000033:anatomy & histology*; D002467:Cell Nucleus; D003593:Cytoplasm; D005260:Female; D008675:Metamorphosis, Biological; D008854:Microscopy, Electron; D008928:Mitochondria; D010063:Ovum / Q000166:cytology*