1. Methods Sputum culture for Mycobacterium tuberculosis and its L forms was conducted from both silicotuberculosis and silicosis groups, and the results were compared.
   方法对矽肺结核组和矽肺组患者，分别进行痰结核分支杆菌和痰结核分支杆菌L型培养，并对结果进行对照观察。

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