[Study of three families with the rare Ael phenotype (author's transl)].
D000017:ABO Blood-Group System; D000328:Adult; D001782:Blood Donors; D005260:Female; D006801:Humans; D008297:Male; D010375:Pedigree; D010641:Phenotype
D000017:ABO Blood-Group System
Estudio de tres familias con el raro fenotipo Ael.