title: Isotypic pattern of the polyclonal B cell response during primary infection by Plasmodium chabaudi and in immune-protected mice.
abstract: The primary infection by P. chabaudi induces an increase of the numbers of splenic immunoglobulin (Ig)-secreting B cells in both athymic and euthymic BALB/c mice. The isotypic pattern of the polyclonal response is restricted only in euthymic mice where IgG2a, IgG2b and IgM plaque-forming cells (PFC) predominate. In immunized animals, protected against a parasite challenge, the isotypic pattern of splenic PFC is completely different, the IgG1 and IgM isotypes constituting the main part of the response. Reinoculation of immune-protected animals induces a PFC response which is dose dependent and accentuates the characteristic isotypic profile of the immune-protected mice.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology*; D006462:Hemolytic Plaque Technique; D007109:Immunity; D007132:Immunoglobulin Isotypes / Q000096:biosynthesis*; D007156:Immunologic Memory; D008288:Malaria / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C / Q000276:immunology; D008819:Mice, Nude / Q000276:immunology; D013154:Spleen / Q000276:immunology
chemical_list: D007132:Immunoglobulin Isotypes