Objective:To compare the difference of the serum protein about the patient of oral lichen planus who received hydroxychloroquine therapy and to explore its possible mechanism. Method:The total serum proteins of oral lichen planus who received hydroxychloroquine therapy were separated by means of immobilized pH gradient-based two-dimensional gel electrophoresis (2-DE).After AgNO3 staining,the differential expression proteins were ana1yzed by using ImageMaster image ana1ysis software. Result:(1)The well-resol...