title: [Non-defectivity of the Rous virus of the Prague strain].
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses / Q000472:pathogenicity*; D002642:Chick Embryo; D005321:Extraembryonic Membranes
vernacular_title: Non-défectivité du virus de Rous de la souche de Prague.