某些细菌生长的一定阶段,在细胞内形成一个圆形、椭圆形或柱形的休眠体。由于它位于细胞内,为区别放线菌、霉菌等形成的分生孢子,故又称内生孢子(endospore),又称芽孢。
小球体包含内生孢子。
粗球孢子菌病肺部感染灶,可见两个大球体充满内生孢子。
This pulmonary infection is due to coccidioidomycosis, as evidenced by the two large spherules filled with endospores.
可见左边的大球体破裂并释放出内部的内生孢子,内生孢子生长并引起持续感染。
Note how the spherule at the left is bursting to expel its endospores, which grow and continue the infection.
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