Typing for RhLA—D in Rhesus monkeys: I. characteristics of ten groups of homozygous typing cells1

Abstract
Certain characteristics of 38 homozygous typing cells (TC) of rhesus monkeys were determined. These TC define 10 RhLA-D locus specificities. Of these, 8 are associated with established RhLA-DR antigens. Two other groups of typing cells, D9 and D10, were previously considered to be associated with blank antigens of the DR series; they now appear to be associated with B-cell antigens which are also likely to be controlled by the DR locus. No influence of RhLA-A or B antigens of MLC [mixed lymphocyte culture] reactivity was observed. Products of at least 1 locus other than D/DR is responsible for MLC stimulation. Whether those MLC antigens are associated with serologically identifiable B-cell antigens which are not controlled by the DR locus is not yet clear.