ANALYSIS OF THE DEFECTIVENESS OF ROUS SARCOMA VIRUS. 3.  DETERMINING INFLUENCE OF A NEW HELPER VIRUS ON THE HOST RANGE AND SUSCEPTIBILITY TO INTERFERENCE OF RSV.
D000486:Allergy and Immunology; D001358:Avian Sarcoma Viruses; D002642:Chick Embryo; D004198:Disease Susceptibility; D006378:Helper Viruses; D058507:Host Specificity; D009500:Neutralization Tests; D012106:Research; D052736:Rous sarcoma virus; D046509:Tissue Culture Techniques; D014776:Virus Cultivation
CHICK EMBRYO; EXPERIMENTAL LAB STUDY; IMMUNOLOGY; NEUTRALIZATION TESTS; ROUS SARCOMA VIRUS; TISSUE CULTURE; VIRUS CULTIVATION