Eimeria tenella in bacteria-free and conventionalized chicks.
D000818:Animals; D001835:Body Weight; D002432:Cecum / Q000382:microbiology / Q000473:pathology; D002470:Cell Survival; D002645:Chickens; D003048:Coccidiosis / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D004539:Eimeria / Q000254:growth & development*; D005856:Germ-Free Life; D006799:Housing, Animal; D008722:Methods; D011201:Poultry Diseases / Q000276:immunology / Q000473:pathology; D013997:Time Factors