occurrence of hla-dr on keratinocytes was invariably linked to the presence of a lymphocytic infiltrate containing numerous activated t-cells ( leu-4 + , hla-dr + ) whereas such infiltrates were not accompanied by hla-dr expression on keratinocytes in all the dermatoses investigated , as in pseudolymphoma and erythema anulare centrifugum .
C0037274
dermatoses
C0041834
erythema