Location of LyM-1 locus on Mus musculus chromosome 1

Following segregation of the alleles at the Sas-1, LyM-1 and M1s in the (AKA/J X C3H/HeJ/F1 X C3H/HeJ backcross progeny, we found the locus responsible for the lymphocyte alloantigen LyM-1 to be closely linked to Sas-1 and M1s. The map distances are estimated to be 12.5 +/- 3.9 for Sas-1 to LyM-1, 6.9 +/- 3.0 for LyM-1 to M1s and 19.4 +/- 4.7 for Sas-1 to M1s. These data clearly indicate that the gene order is Sas-1-LyM-1-M1s on Mus musculus chromosome 1.