title: Association between the electrophoretically-determined C4M haplotype product and partial inhibition of anti-Cha.
abstract: C4-coated Ch(a+) red blood cells (RBC) were used as indicator cells in a serum inhibition reaction of anti-Ch(a), for the determination of the Ch group of serum. This serological study, combined with electrophoretic studies of C4 in a family material, showed that the C4M haplotype product was associated with partial inhibition of anti-Ch(a).
mesh_terms: D001789:Blood Group Antigens / Q000235:genetics / Q000276:immunology*; D003181:Complement C4 / Q000235:genetics* / Q000276:immunology; D000939:Epitopes; D006801:Humans; D007122:Immunoelectrophoresis; D007518:Isoantibodies / Q000276:immunology; D011110:Polymorphism, Genetic
chemical_list: D001789:Blood Group Antigens; D003181:Complement C4; D000939:Epitopes; D007518:Isoantibodies