title: False-negative serologic tests for Toxoplasma in birds.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000032:analysis; D001715:Bird Diseases / Q000175:diagnosis*; D002645:Chickens; D003168:Complement Fixation Tests; D005188:False Negative Reactions; D006386:Hemagglutination Tests; D011201:Poultry Diseases / Q000175:diagnosis*; D012698:Serologic Tests; D014122:Toxoplasma / Q000276:immunology; D014124:Toxoplasmosis, Animal / Q000175:diagnosis*
chemical_list: D000906:Antibodies