title: Regulation of the primary in vitro response to TNP-polymerized ovalbumin by T suppressor cells induced by ovalbumin feeding.
abstract: Spleen cells from DBA/2 mice that received a single feeding of 20 mg of ovalbumin (OVA) 7 days previously were specifically hyporesponsive to primary in vitro challenge with the thymic-dependent antigen TNP-polymerized ovalbumin (TNP-POL-OVA). The tolerance observed in spleen cells from OVA-fed animals was dependent upon OVA-specific T suppressor cells, because splenic T cells from OVA-fed mice suppressed the primary response to TNP-POL-OVA of cultures containing normal T and B cells. The tolerance and suppression was OVA specific, because spleen cells from OVA-fed animals responded well to other antigens (including TNP on another carrier), and splenic T cells from OVA-fed mice did not affect the response of normal T and B cells to sheep erythrocytes. These data confirm the existence of T suppressor cells after OVA feeding and provide a direct means of assaying their activity in a primary in vitro response.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D000917:Antibody Formation; D000941:Antigens / Q000008:administration & dosage / Q000276:immunology; D005260:Female; D007108:Immune Tolerance; D008213:Lymphocyte Activation; D046911:Macromolecular Substances; D051379:Mice; D008811:Mice, Inbred DBA; D010047:Ovalbumin / Q000008:administration & dosage* / Q000276:immunology*; D013154:Spleen / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D000941:Antigens; D046911:Macromolecular Substances; C038600:trinitrophenyl-ovalbumin; D010047:Ovalbumin