title: Antigen modulation of the immune response. The decline of immunological memory in the absence of continuing antigenic stimulation.
mesh_terms: D000645:Ammonium Sulfate; D000818:Animals; D000941:Antigens; D002417:Cattle / Q000276:immunology; D004140:Dinitrophenols; D007116:Immunization, Passive; D007117:Immunization, Secondary; D007156:Immunologic Memory; D008214:Lymphocytes / Q000276:immunology; D008239:Lysine / Q000378:metabolism; D010567:Pertussis Vaccine; D011233:Precipitin Tests; D011828:Radiation Chimera; D051381:Rats; D013154:Spleen / Q000166:cytology; D014316:Tritium; D005719:gamma-Globulins
chemical_list: D000941:Antigens; D004140:Dinitrophenols; D010567:Pertussis Vaccine; D005719:gamma-Globulins; D014316:Tritium; D008239:Lysine; D000645:Ammonium Sulfate