Jsb and Goa screening of Negro donors.
D000017:ABO Blood-Group System; D001741:Black or African American; D001782:Blood Donors; D001789:Blood Group Antigens; D006801:Humans; D066298:In Vitro Techniques; D007519:Isoantigens / Q000032:analysis*; D008403:Mass Screening; D010641:Phenotype
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D007519:Isoantigens