How do you preserve protozoa?

To preserve protozoa, you can use several methods depending on the intended study or application. Common techniques include fixation with formaldehyde or glutaraldehyde to halt cellular processes, followed by dehydration and embedding in resin for microscopy. Alternatively, protozoa can be preserved in a cryoprotectant solution and frozen at very low temperatures for long-term storage. It's essential to maintain the appropriate conditions to ensure the viability and integrity of the protozoa for future research.