title: Genetic linkage between the HL-A system and a deficit of the second component (C2) of complement in four generations of a family.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003175:Complement C2 / Q000172:deficiency*; D003165:Complement System Proteins / Q000172:deficiency*; D005260:Female; D008040:Genetic Linkage; D005838:Genotype; D006680:HLA Antigens / Q000032:analysis; D006238:Haploidy; D006649:Histocompatibility Antigens; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D011995:Recombination, Genetic
chemical_list: D003175:Complement C2; D006680:HLA Antigens; D006649:Histocompatibility Antigens; D003165:Complement System Proteins