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单词 Bacterial capsules
释义

Bacterial capsules

中文百科

荚膜 Bacterial capsule

(重定向自Bacterial capsules)

荚膜是某些原核生物细胞壁外一层厚度不定的黏液状物质。荚膜并非原核细胞的必需构造,荚膜菌在自然环境中或在宿主体内时,能保有最强产荚膜之能力;但用普通培养基培养时,经多代繁殖后产荚膜能力会逐渐下降。

英语百科

Bacterial capsule 荚膜

(重定向自Bacterial capsules)
The outer red layer in this diagram is the capsule, which is distinct from the cell envelope. This bacteria is Gram-positive, as its cell envelope comprises a single plasma membrane (orange) and a thick peptidoglycan-containing cell wall (purple).

The cell capsule is a very large structure of some prokaryotic cells, such as bacterial cells. It is a polysaccharide layer that lies outside the cell envelope of bacteria, and is thus deemed part of the outer envelope of a bacterial cell. It is a well-organized layer, not easily washed off, and it can be the cause of various diseases.

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更新时间:2025/6/17 19:35:01