Download the handout at http://www.bbguy.org/pdf/BB1Updated12....

NOTE: There is an inadvertent typographical error in the description of the H antigen and the ABO chains, first seen at 15:55 of this video but repeated multiple times. The subterminal GalNAc should be GlcNAc. I regret the error and will correct in future updates.

This Blood Bank Guy video, recorded in December 2011, contains lots of information about the major blood group systems. It is, in fact, a modified and updated version of the blood groups lecture (Blood Bank 1) that I used to give when I taught for the Osler Institute Pathology Review Course.