title: Transfer factor: isolation of a biologically active component.
mesh_terms: D002469:Cell Separation; D002845:Chromatography; D003851:Deoxyribonucleases / Q000494:pharmacology; D003911:Dextrans; D006801:Humans; D007112:Immunity, Maternally-Acquired; D007962:Leukocytes / Q000276:immunology; D014374:Tuberculin Test
chemical_list: D003911:Dextrans; D003851:Deoxyribonucleases