CD44v6 expresses positively at the cell membranes of basal cell and 1/3 layer cells near the base ment membrane of normal oral mucosa,while superficial layer of that presents alm ost negative expression.

• CD44v6在正常口腔黏膜上皮的基底细胞层及近基底 1/3的上皮细胞膜上呈阳性表达 ,上皮表层细胞几乎呈阴性表达。