Plasminogen, the serum proenzyme activated by factors from cells transformed by oncogenic viruses.

Animals Avian Sarcoma Viruses Biological Assay Cell Line Cell Transformation, Neoplastic Chick Embryo Chromatography, Affinity Chromatography, Ion Exchange Cricetinae Culture Media Dogs Electrophoresis, Disc Enzyme Activation Fibrinolysis Fibrinolytic Agents/isolation & purification Gammaretrovirus Humans Iodine Radioisotopes Mice Molecular Weight Plasminogen/isolation & purification,metabolism Sarcoma/microbiology Simian virus 40 Streptokinase/metabolism

Culture Media Fibrinolytic Agents Iodine Radioisotopes Plasminogen Streptokinase