title: Suppression of IgE antibody production in SJL mice. V. Effect of irradiation and adult thymectomy on the suppression of IgE antibody production in SJL mice.
abstract: Anti-DNP IgE antibody production was low and transient in SJL mice which were immunized with 1 microgram DNP-Nb and 1 mg A1(OH)3. The immunized SJL mice were irradiated (60-540 R) 1 day after challenge. A dose higher than 180 R induced enhancement of anti-DNP IgE antibody production as compared to nonirradiated control mice, suggesting the existence of irradiation-sensitive suppressor cells. Anti-DNP IgE antibody production was suppressed when immunized and irradiated SJL mice were injected with spleen cells from adult-thymectomized SJL mice. The donors of the spleen cells were thymectomized 2 or 4 months previously, and this suggests that the suppressor cells from unprimed mice are long-living T cells.
mesh_terms: D000818:Animals; D000917:Antibody Formation / Q000528:radiation effects; D004136:Dinitrobenzenes / Q000276:immunology; D005260:Female; D007116:Immunization, Passive; D007073:Immunoglobulin E / Q000096:biosynthesis*; D051379:Mice; D008815:Mice, Inbred Strains; D011828:Radiation Chimera; D013154:Spleen / Q000166:cytology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology* / Q000637:transplantation; D013934:Thymectomy
chemical_list: D004136:Dinitrobenzenes; D007073:Immunoglobulin E