based on the known normal distribution of differentiation antigens , particularly the cd-13 antigen , cases could be ranked according to clonogenic phenotype into immature ( cd-13- hla-dr+ cd-33+ or cd-33- ; five cases ) , and mature ( cd-13+ hla-dr+ cd-33+ ; eight cases ) , levels .
C0003324
differentiation antigens
C0003322
cd