title: Examinations of the Inv(a) factor in families.
mesh_terms: D001782:Blood Donors; D001789:Blood Group Antigens; D005826:Genetics, Medical; D006801:Humans; D066298:In Vitro Techniques; D005719:gamma-Globulins
chemical_list: D001789:Blood Group Antigens; D005719:gamma-Globulins