Vitamin A deficiency in the germfree state.
D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001835:Body Weight; D002645:Chickens; D004927:Escherichia coli Infections / Q000503:physiopathology; D005260:Female; D005856:Germ-Free Life; D006358:Hot Temperature; D008297:Male; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D012737:Sex Factors; D014802:Vitamin A Deficiency / Q000473:pathology / Q000503:physiopathology*