[Essay with the isolation of ribonucleic acid from chorio-allantoic membranes of chick embryos infected with influenza viruses].
D000482:Allantois; D000818:Animals; D002642:Chick Embryo; D009975:Orthomyxoviridae / Q000208:ethnology*; D012313:RNA / Q000737:chemistry*
D012313:RNA
INFLUENZA VIRUSES/culture; RIBONUCLEIC ACID/chemistry