Fine structure and early fertilization changes of the animal pole in eggs of the river lamprey, Lampetra fluviatilis.
D000818:Animals; D003593:Cytoplasm; D005260:Female; D005306:Fertilization; D005399:Fishes / Q000033:anatomy & histology*; D008297:Male; D008854:Microscopy, Electron; D009940:Organoids; D010063:Ovum / Q000166:cytology*