Method:The tuberculin test is carried on with 2u PPD-T and 5u PPD-B injected into the skin of students in the middle school.

方法：通过结核菌素皮肤试验对河南省部分中学生的非结核分枝杆菌感染情况进行了观察。

youdao

Method:The tuberculin test is carried on with 2u PPD-T and 5u PPD-B injected into the skin of students in the middle school.

方法：通过结核菌素皮肤试验对河南省部分中学生的非结核分枝杆菌感染情况进行了观察。

youdao