…When a person with tuberculosis, especially one with cavities in the lungs, coughs, they scatter the tuberculosis bacteria around them, which are then inhaled and transmitted to people nearby. Mycobacterium tuberculosis is a gram-positive bacterium discovered by R. Koch in 1882. It is a long, thin rod-shaped bacterium measuring 2-4 μm in length and 0.2-0.4 μm in width (it is in the same family as Mycobacterium leprae and is very similar). There are three types of the bacterium: human, bovine, and avian, and the first two types infect humans. … *Some of the terminology that mentions "Mycobacterium tuberculosis" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…結核にかかっている人,とくに肺に空洞をもつ人が咳をしたとき,まわりに結核菌を飛び散らし,近くにいる人が吸い込んで感染する。結核菌Mycobacterium tuberculosisは1882年R.コッホによって発見されたグラム陽性菌で,長さ2~4μm,幅0.2~0.4μmの細長い杆菌である(ライ菌と同じ仲間で,よく似ている)。菌型にヒト型,ウシ型,トリ型の3型があり,ヒトには前2者が感染する。… ※「Mycobacterium tuberculosis」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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