title: Hereditary C4 deficiency--genetic studies and linkage to HLA.
mesh_terms: D000328:Adult; D003181:Complement C4 / Q000172:deficiency* / Q000235:genetics; D005260:Female; D008040:Genetic Linkage; D006680:HLA Antigens / Q000235:genetics*; D006238:Haploidy; D006461:Hemolysis; D006650:Histocompatibility Testing; D006801:Humans; D008297:Male; D010375:Pedigree
chemical_list: D003181:Complement C4; D006680:HLA Antigens