Naturally occurring anti-M antibodies in one member of fraternal twins.
D000906:Antibodies; D001789:Blood Group Antigens / Q000235:genetics*; D005828:Genetics, Population; D006801:Humans; D014427:Twins / Q000097:blood*; D014429:Twins, Dizygotic
D000906:Antibodies; D001789:Blood Group Antigens
BLOOD GROUPS/genetics; TWINS/blood