What is a cyst - what type of microorganism produces cysts?

A cyst is a dormant, protective form that certain microorganisms, such as protozoa and some bacteria, can produce in response to unfavorable environmental conditions. Cysts are typically resistant to heat, desiccation, and chemical disinfectants, allowing the microorganisms to survive until conditions improve. Examples of protozoa that produce cysts include Giardia lamblia and Entamoeba histolytica. Cysts play a crucial role in the life cycle of these organisms, facilitating transmission and persistence in various environments.