Abstract
Numeric terminology of erythrocyte blood group antigens Since the discovery of the first human blood groups, the terminology for erythrocyte blood group antigens has evolved and become inconsistent. In some cases, a single letter is used (eg, A / B, E / c), in some others a symbol with a superscript to denote allelic products is used (eg, Fy a / Fy b, Jk a / Jk b) while in still others, a numerical notation is used (eg, Fy3, Lu4, K11). Even within the same blood group system, antigens have been named by different terminology (eg, K/k, Kp a/Kp b, K11/K17) and the same antigen was given different names in different laboratories. Therefore a necessary alternative ‘popular’ terminology was suggested by the ISBT (International Society of Blood Transfusion) Working Party; In its last monograph, published in 1995 and reviewed in 1996, erythrocyte blood group antigens are classified into 23 systems, 5 collections and 2 series. The Working Party also suggested guidelines for establishing new blood group systems and including new specificities into the nomenclature.
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