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现已查明,鼻硬结症的病变乃系鼻硬结Klebsiella rhinoscleromatis杆菌或Friedlander氏杆菌所引起。共传染媒介为蝇。盖因此类昆虫
It has been established that rhinosclerosis is caused by Klebsiella rhinoscleromatis or Friedlander’s bacterium. A total of vectors for flies. Cover for such insects