title: Evidence for a change in certain properties of vaccinia virus after trypsinization: heat inactivation or removal of a postulated trypsin-sensitive inhibitor on virions.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000941:Antigens / Q000032:analysis; D002642:Chick Embryo; D003470:Culture Media; D046508:Culture Techniques; D006462:Hemolytic Plaque Technique; D006358:Hot Temperature; D007201:Indicator Dilution Techniques; D014357:Trypsin / Q000494:pharmacology*; D014361:Trypsin Inhibitors / Q000494:pharmacology*; D014616:Vaccinia virus / Q000187:drug effects* / Q000254:growth & development / Q000276:immunology / Q000472:pathogenicity
chemical_list: D000941:Antigens; D003470:Culture Media; D014361:Trypsin Inhibitors; D014357:Trypsin