A antigen
A Antigen
A major blood group (ABO) antigen which defines human blood type A, and assumes the codominant allele at the ABO locus is either blood group A or H.Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
A antigen
A major blood group–ABO antigen that defines the blood type A, which assumes the codominant allele at the ABO locus is either blood group A or H. Cf B antigen, Bombay phenotype, H antigen.McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.