title: Purification of an endogenous pyrogen, with an appendix on assay methods.
mesh_terms: D000818:Animals; D001202:Ascitic Fluid; D001681:Biological Assay; D002499:Centrifugation, Density Gradient; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D004589:Electrophoresis, Disc; D004731:Endotoxins / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007962:Leukocytes; D008722:Methods; D011749:Pyrogens / Q000302:isolation & purification*; D011817:Rabbits
chemical_list: D004731:Endotoxins; D011749:Pyrogens