title: The effect of enhancing factor on the immunity of mice against tetanus.
abstract: Enhancing factor was prepared from spleens of mice primed and reinjected with tetanus toxoid. The culture supernatant was separated by gel chromatography on Sephadex G-150, the resulted fractions were ultrafiltered and their enhancing activity was tested in vivo. The 1st fraction separated by gel chromatography proved to be active.
mesh_terms: D000818:Animals; D005591:Chemical Fractionation; D002850:Chromatography, Gel; D007109:Immunity; D051379:Mice; D013154:Spleen / Q000276:immunology; D013742:Tetanus / Q000276:immunology* / Q000401:mortality; D013745:Tetanus Toxoid / Q000494:pharmacology
chemical_list: D013745:Tetanus Toxoid