title: Transition in the character of immunological memory in mice after immunization. II. Memory in T and B cell populations.
abstract: Teh immunological memory in antibody response of mice to bovine serum albumin (BSA) was investigated at the level of antibody-producing cells or their precursor B cells and thymus-dependent helper T cells. Spleen cells obtained from mice previously primed with alum-precipitated BSA at various times were transferred to irradiated syngeneic mice. Spleen cells from mice immunized 8 days or 64 days before presented a high degree of adoptive secondary response, whereas the adoptive response of cells from mice immunized 2 days previously was found to be inferior even to that of unprimed spleen cells. Primed spleen cells treated with anti-mouse thymocyte rabbit serum plus complement were supplemented with normal thymus cells and the restoration of the responsiveness was examined. It was suggested that the memory was carried mainly by T cells in the earlier phases of the immunological memory (2 days or 8 days after the primary immunization). On the other hand, the immunological memory in the B-cell population was shown to grow gradually toward the later phase (later than 40 days).
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells / Q000276:immunology; D000961:Antilymphocyte Serum / Q000494:pharmacology; D001402:B-Lymphocytes / Q000276:immunology*; D005260:Female; D007156:Immunologic Memory; D008297:Male; D051379:Mice; D012710:Serum Albumin, Bovine; D013601:T-Lymphocytes / Q000276:immunology*; D013997:Time Factors
chemical_list: D000961:Antilymphocyte Serum; D012710:Serum Albumin, Bovine