title: Genetic polymorphism of human complement C4 and detection of heterozygotes.
mesh_terms: D003181:Complement C4 / Q000235:genetics*; D005838:Genotype; D006579:Heterozygote; D006801:Humans; D010375:Pedigree; D011110:Polymorphism, Genetic
chemical_list: D003181:Complement C4