title: Class-specific circulating antibodies in infections with Eimeria tenella.
abstract: Using a three-layer immunofluorescent test, class-specific, parasite-specific circulating antibody responses to Eimeria tenella were investigated following oocyst infection, drug-truncated oocyst infection and the injection of non-living antigens. Following all three means of antigenic stimulation, IgG, IgM and IgA antibodies were detected. The response to drug-truncated infections was dose-dependent. The sequence of appearance of antibody was IgM, IgA, IgG, whilst the relative quantities were IgG greater than or equal to IgM greater than IgA.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000276:immunology; D000953:Antigens, Protozoan / Q000032:analysis; D002645:Chickens / Q000276:immunology* / Q000469:parasitology; D003048:Coccidiosis / Q000188:drug therapy / Q000276:immunology* / Q000469:parasitology; D004539:Eimeria / Q000276:immunology*; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D008297:Male; D011201:Poultry Diseases / Q000276:immunology / Q000469:parasitology*
chemical_list: D000906:Antibodies; D000953:Antigens, Protozoan; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M