扁平苔藓多发于口腔粘膜,有人认为与免疫相关,相反地,口腔粘膜白斑与免疫无关。二者有时在临床上难于鉴别。本文作者用 OKT_6单克隆抗体对42例口腔粘膜扁平苔藓(平均年龄54岁)、14例口腔粘膜白斑(平均年龄57岁)及3例健康者口腔粘膜组织的郎格罕细胞(LC)进行数量分析。结果扁平苔藓上皮的 LC 平均数为308LC/mm~2,粘膜白斑为91LC/mm~2(P<0.05),正常粘膜组织 Lichen planus is more common in the oral mucosa, some people think is related to immunity, on the contrary, oral mucosa and immunization has nothing to do. The two are sometimes clinically difficult to identify. The authors used OKT_6 monoclonal antibody on the number of oral mucosa in 42 cases of oral lichen planus (mean age 54 years), 14 cases of oral leukoplakia (mean age 57 years) and 3 cases of healthy oral mucosa of Langerhans cells analysis. Results The average LC of lichen planus epithelium was 308LC / mm ~ 2, the leukoplakia was 91LC / mm ~ 2 (P <0.05), the normal mucosa