Hatching in teleostean fishes: fine structural changes in the egg envelope during enzymatic breakdown in vivo and in vitro.
D000818:Animals; D004625:Embryo, Nonmammalian / Q000502:physiology*; D005260:Female; D005399:Fishes / Q000502:physiology*; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D010063:Ovum / Q000502:physiology / Q000648:ultrastructure*; D015044:Zona Pellucida / Q000648:ultrastructure