title: [On increasing the virulence of swine fever virus in pigs treated with serum. A contribution to the problem of immunological variants (C. N].
mesh_terms: D000818:Animals; D000917:Antibody Formation; D007106:Immune Sera / Q000494:pharmacology; D013552:Swine; D014774:Virulence; D014713:Viruses, Unclassified / Q000276:immunology*
chemical_list: D007106:Immune Sera
vernacular_title: Zur Virulenzsteigerung des Schweinepestvirus in serumbehandelten Schweinen Ein Beitrag zum "Variantenproblem nach DALE".