ANALYSIS OF THE DEFECTIVENESS OF ROUS SARCOMA VIRUS,  II. SPECIFICATION OF RSV ANTIGENICITY BY HELPER VIRUS.
D000818:Animals; D000941:Antigens; D001358:Avian Sarcoma Viruses; D006378:Helper Viruses; D007106:Immune Sera; D008460:Meat; D009500:Neutralization Tests; D011200:Poultry; D012106:Research; D052736:Rous sarcoma virus; D014776:Virus Cultivation
D000941:Antigens; D007106:Immune Sera
ANTIGENS; EXPERIMENTAL LAB STUDY; IMMUNE SERUMS; NEUTRALIZATION TESTS; POULTRY; ROUS SARCOMA VIRUS; VIRUS CULTIVATION