The Lewis blood factors in American Negroes.
D001741:Black or African American; D001789:Blood Group Antigens; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins; D010455:Peptides; D014481:United States
D001789:Blood Group Antigens; D036341:Intercellular Signaling Peptides and Proteins; D010455:Peptides; C021266:vascular factor
BLOOD GROUPS