The Swann phenotype 700:4,-41; genetic studies.

Serological analysis of the red cells from members of a large French-Canadian kindred proved that the Swa antigen is not part of the P1, Dombrock or Yt blood group systems. A linkage analysis of the SW blood group locus in relation to 27 other loci indicates that SW is not closely linked to ABO, ACP1, ADA, AK1, C3, D2S5, DO, ESD, F13A, FY, GLO1, GPT, HP, IGHG, JK, LU, MYCL, P1, PGP, PGM1, PLG, RH or YT. By inference the study also allows exclusion of Swa from the Landsteiner-Wiener, Radin and Scianna blood group systems and exclusion of SW from the p22.1 to p34 segment of chromosome 1.