有些细菌（多为杆菌）在一定条件下，细胞质高度浓缩脱水所形成的一种抗逆性很强的球形或椭圆形的休眠体。1个细菌细胞只形成1个芽孢，有的在细胞一端，有的在细胞中部。由于芽孢是在细胞内形成的，所以也常称之为内生孢子，亦称芽孢。每一细胞仅形成一个芽孢，所以其没有繁殖功能。
相反，对细菌芽孢的生物学本质和功能却提出了多种解释。
Instead, various explanations of the biological nature and function of bacterial spores have been advanced.
结论，一元复方戊二醛消毒剂稳定性良好，对细菌繁殖体、分枝杆菌和细菌芽孢杀灭作用较强。
Conclusions: The monophyletic compound glutaraldehyde disinfectant has good stability and high efficacy in killing vegetative forms of bacteria, mycobacterium and bacterial spores.
芽孢杆菌一种杆状，孢子型的好氧型细菌芽孢杆菌属，经常成串地产生，包括芽孢杆菌蒽属，它会引起炭疽病。
Any of various rod - shaped, spore - forming, aerobic bacteria of the genus bacillus that often occur in chains and include bacillus anthracis, the causative agent of anthrax.
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