title: Incidental discovery of an unusual secretor status of patient group A2B with anti-A1 antibody in the serum.
abstract: A variant of AB blood group (A2B) in a patient is described. Anti-A1 agglutinin was demonstrated in the serum and the saliva of secretor contained BH but no A substance. This is the first report of abnormality regarding  secretor status of group A2B, individual from Bangladesh.
mesh_terms: D000017:ABO Blood-Group System; D000328:Adult; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D014644:Genetic Variation; D006801:Humans; D007128:Immunoglobulin Fragments / Q000032:analysis*; D007518:Isoantibodies / Q000032:analysis*; D011247:Pregnancy; D012635:Secretory Component / Q000032:analysis*
chemical_list: D000017:ABO Blood-Group System; D007128:Immunoglobulin Fragments; D007518:Isoantibodies; D012635:Secretory Component