Objective: To study the expression of endothelin-1 (ET-1) in oral submucous fibrosis(OSF), so as to investigate its role in the pathogenesis of OSF.

• 目的:通过研究内皮素-1(endothelin-1,ET-1)在口腔粘膜下纤维化中mRNA的表达,探讨ET-1与OSF(oral submucous fibrosis)病变发生发展的关系。