Endospore
* Vegetative cells of some bacteria, such as Bacillus and Clostridium, produce resting stages called endospores.
* A bacterium produces a single endospore, which helps that
organism survive and is not a means of reproduction.
* Endospores are highly resistant to heat, drying, acids bases, certain disinfectants, and even radiation.
* Endospores are capable of surviving adverse environment
conditions for long periods of time.