不论关于芽孢在自然界中的作用，或有关芽孢形成的原因，都没有一致的看法。
There is no unanimity of opinion either of spore function in nature or of the factors concerned in spore formation.
形成芽孢的细菌主要有两属。
There are two important genera of bacteria which form spores.
当一个杆菌即将形成芽孢时，细胞内便出现一粒带折射性的微小颗粒。
When a rod is about to sporulate a tiny refractile granule appears in the cell.
当一个杆菌即将形成芽孢时，细胞内便出现一粒带折射性的微小颗粒。
When a rod is about to sporulate a tiny refractile granule appears in the cell.
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