5′ portion of the Rhesus genes' intron 1. One hundred thirty nucleotides of intron 1 adjacent to exon 1 are shown for the D^VI type III allele along with the commonRHCE and RHD genes. The RHCE and RHDgenes differ by three nucleotide substitutions and one insertion (boxed). The D^VI type III allele is identical toRHD at these positions. As expected, D^VI type I and D^VI type II alleles are also identical toRHD (not shown). Nucleic acid sequence accession numbers wereZ97362 (RHCE) and Z97363 (RHD).