While we found increased expression of blood group B antigen in the patients studied, the levels might be even higher without this possible blocking effect.

Transient acquired blood group B antigen associated with diverticular bowel disease.

Blood group B individuals have the B antigen on the surface of their RBCs, and blood serum containing IgM antibodies against the A antigen.

Blood group B has its highest frequency in Northern India and neighboring Central Asia, and its incidence diminishes both towards the west and the east, falling to single digit percentages in Spain.