ABBREVIATION for Order of Saint Francis 天主教的方济各会
The calcium contained in betel quid may be involved in the pathogenesis of OSF.
槟榔成分中的钙可能参与了口腔粘膜下纤维性变的发病。
In fact, some companies who were members of the OSF actively worked to ensure that ANDF did not succeed.
事实上，一些属于OSF的公司积极的工作就是为了使ANDF不成功。
Objective: Recent research on oral submucous fibrosis (OSF) suggests that OSF is an autoimmune disease.
目的：口腔粘膜下纤维性变近期的研究，提出来是自身免疫性疾病。
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