title: Effects of T mitogens on in vivo antibody production to a T-dependent antigen in lines of mice genetically selected for high or low in vitro responsiveness to PHA.
abstract: The influence of genes which regulate the in vitro T-cell proliferative response to T mitogen upon in vivo antibody production to a T-dependent antigen was studied in two lines of mice genetically selected for a high or a low in vitro lymphocyte response to phytohaemagglutinin (PHA). Kinetics of agglutinin production to increasing doses of sheep erythrocytes was similar in the two lines, except for the titres of mercaptoethanol-resistant antibodies, which were slightly lower in the low-responder line. Treatment with mitogen prior to immunization modified the antibody response in the two lines differently. This finding would indicate that the genes which regulate in vitro stimulation of T cells by PHA also control in vivo activation of T-cell subsets involved in immunoresponsiveness.
mesh_terms: D000818:Animals; D000917:Antibody Formation / Q000187:drug effects*; D000941:Antigens / Q000276:immunology; D003208:Concanavalin A / Q000276:immunology; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D005809:Genes, Regulator; D007117:Immunization, Secondary; D008213:Lymphocyte Activation; D008297:Male; D051379:Mice; D008817:Mice, Mutant Strains; D008934:Mitogens / Q000494:pharmacology*; D010835:Phytohemagglutinins / Q000276:immunology; D012756:Sheep / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D013997:Time Factors
chemical_list: D000941:Antigens; D008934:Mitogens; D010835:Phytohemagglutinins; D003208:Concanavalin A