Mapping human autosomes: assignment of the MN locus to a specific segment in the long arm of chromosome no. 2.

The locus for MN blood groups, MN, is tentatively assigned to a specific region near the centromere of the long arm of chromosome No. 2 on the basis of a demonstrable deletion of band 2q14 from a No. 2 chromosome in a boy previously reported to be hemizygous (M/-) at that locus.