Liquid nitrogenFrom our partner site on diet & exercise, MyDietExercise.com.
Nitrogen is typically found in the environment in gaseous form. To become a liquid, nitrogen gas must release great amounts of heat, becoming super-cooled to about minus 200 degrees Celsius. It may be applied to diseased or cancerous tissue to kill the cells. Tissue that has been frozen dries and falls off the surrounding tissue.
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