title: Human leukocyte interferon produced by use of an antibody-free human serum fraction.
abstract: An antibody-free human serum fraction has been prepared by ammonium sulfate precipitation. This fraction can be substituted for whole serum in the production of optimal yields of interferon by induced human leukocytes.
mesh_terms: D000645:Ammonium Sulfate; D000650:Amnion; D011232:Chemical Precipitation; D002850:Chromatography, Gel; D046508:Culture Techniques; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D007106:Immune Sera; D005779:Immunodiffusion; D007136:Immunoglobulins / Q000302:isolation & purification; D007372:Interferons / Q000032:analysis / Q000096:biosynthesis*; D007962:Leukocytes / Q000378:metabolism*; D010222:Parainfluenza Virus 1, Human; D017955:Poliovirus / Q000254:growth & development
chemical_list: D007106:Immune Sera; D007136:Immunoglobulins; D007372:Interferons; D000645:Ammonium Sulfate