Identification of the spike proteins of Rous sarcoma virus.

Amino Acids Animals Autoradiography Avian Sarcoma Viruses/analysis,drug effects,isolation & purification,pathogenicity Bromelains/pharmacology Carbon Isotopes Centrifugation, Density Gradient Chick Embryo Culture Techniques Electrophoresis, Disc Fibroblasts Glucosamine Glycoproteins/analysis Microscopy, Electron Molecular Weight Staining and Labeling Sucrose Tritium Viral Proteins/analysis Virus Cultivation

Amino Acids Carbon Isotopes Glycoproteins Viral Proteins Tritium Sucrose Bromelains Glucosamine