A ‘New’ Human Blood Group Antigen, Sw_a

Abstract

IN the course of compatibility tests with the serum of a patient Gu., the red cells of one donor, Swann, were found to be strongly agglutinated in all media. The patient was in crisis from auto-immune hæmolytic disease of the ‘cold’ non-gamma globulin type, with no free ‘non-specific’ antibody in the serum. Her groups were: 0; cde/cde; NS/Ns, Mi(a−), Vw−, Mg−; P₁+; K−; Le(a−b+); Fy(a+); Jk(a+b+); Wr(a−).