Bacterial penetration of the recently oviposited shell of hens' eggs.
D000818:Animals; D001419:Bacteria / Q000254:growth & development; D001424:Bacterial Infections / Q000209:etiology / Q000662:veterinary*; D002645:Chickens; D004528:Egg Shell / Q000648:ultrastructure; D005243:Feces / Q000382:microbiology; D005260:Female; D008855:Microscopy, Electron, Scanning; D010058:Oviposition; D011201:Poultry Diseases / Q000209:etiology*