Growth of vaccinia and variola viruses in the one-day-old fertile hen's egg.
D000818:Animals; D001686:Biological Phenomena; D002645:Chickens; D004531:Eggs; D005260:Female; D005298:Fertility; D006801:Humans; D010829:Physiological Phenomena; D012899:Smallpox; D014615:Vaccinia; D014616:Vaccinia virus; D012901:Variola virus
SMALLPOX/virus; VACCINIA/virus