Study of an American Negro family with the rare Rh genotype ryr. (CdE/cde).
D001741:Black or African American; D005823:Genetics; D005838:Genotype; D006801:Humans; D012204:Rh-Hr Blood-Group System; D014481:United States
D012204:Rh-Hr Blood-Group System
GENETICS; Rh FACTOR