Tumor cells in carcinoma-in-situ expressing HLA-D/Dr antigen contrasted sharplywith the negative expression of normal paracancerous epithelium.

• 棕黄或棕黑色颗粒状阳性产物多位于细胞膜上,分组比较提示分化较低者D/Dr抗原的表达较强,阳性细胞数量较多。