Cryotechniques are a group of related procedures for stabilizing, or "fixing" specimens for microscopic observation. Samples are rapidly frozen to maintain cellular structure and composition as it exists under physiological conditions.
Cryo-Techniques is a term used to describe the process of fixing things. It refers to stabilizing and fixing specimens so that they can be observed.
Nitrogen is used to make pure oxygen less poisunos and pure so humans can breathe it in and live. It's also, used to make amino acids which is the building blocks to proteins in the body.life
Liquid nitrogen is used for cryotechniques as it can provide a very low temperature and used for the preparation of various nitrogenous fertilizer and compounds like ammonia, nitric acid, etc.