title: C4B gene polymorphism detected in a human cosmid clone.
mesh_terms: D002874:Chromosome Mapping; D003001:Cloning, Molecular; D003181:Complement C4 / Q000235:genetics*; D015934:Complement C4a; D015935:Complement C4b; D004262:DNA Restriction Enzymes; D006801:Humans; D011110:Polymorphism, Genetic; D013255:Steroid 21-Hydroxylase / Q000235:genetics*; D013250:Steroid Hydroxylases / Q000235:genetics*
chemical_list: D003181:Complement C4; D015934:Complement C4a; D015935:Complement C4b; D013250:Steroid Hydroxylases; D013255:Steroid 21-Hydroxylase; D004262:DNA Restriction Enzymes