We describe the use of heteroduplex analysis to enhance the resolution
of different rhesus-derived (Rh) isotypes, Heteroduplex analysis of d
ifferent domains of the Rh D and Rh CE loci can be performed to diagno
se a variety of blood group incompatibilities. One application of this
technique is the ability to test for fetal-maternal blood group incom
patibilities during pregnancy, Several new serotype-specific sequence
variations were discovered in the mapping of the Rh locus, and used in
the construction of artificial heteroduplex generators (HGs). HGs fac
ilitate the resolution of the Rh isotypes by electrophoretic methods.