title: Immunoprecipitating factors of vaccinia virus.
mesh_terms: D000941:Antigens; D006385:Hemagglutination Inhibition Tests; D005779:Immunodiffusion; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D010434:Pepsin A; D014616:Vaccinia virus / Q000276:immunology*
chemical_list: D000941:Antigens; D010434:Pepsin A