Linkage data on red cell acid phosphatase from family studies. 
An analysis of the linkage relationships of red cell acid phosphatase (ACP1) with 36 other loci is presented.  Close linkage is excluded for many loci.  The hint of loose linkage with MNSs is not statistically significant, nor is it apparently consistent with the assignment of ACP1 and and MNSs to different arms of chromosome 2.