title: Increase in activity of virus induced serum pyrogen after chromatography on biogel columns.
mesh_terms: D000818:Animals; D002850:Chromatography, Gel; D005334:Fever / Q000139:chemically induced*; D007275:Injections, Intravenous; D009522:Newcastle disease virus; D009975:Orthomyxoviridae; D011749:Pyrogens / Q000096:biosynthesis / Q000097:blood* / Q000494:pharmacology; D011817:Rabbits
chemical_list: D011749:Pyrogens