Kell blood group system
Also found in: Encyclopedia.
Kell blood group systemA family of red blood cell ANTIGENS designated as the ALLOTYPES KK, Kk, kk and K-k-, believed to be on the short arm of chromosome 2. Antibodies to the K-antigen occur in about 10% of people in England and can cause red cell breakdown (haemolytic) transfusion reactions. The group system is next in importance to the ABO and rhesus systems and is named after a woman whose serum contained the antibodies.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005