Doctors, to freeze skin for wart removal, use Dry Ice or liquid nitrogen. Many medical offices ship biological specimens in Dry Ice for laboratory testing or further processing. Dry Ice is also used to keep bone morrow frozen when it is shipped.
provide dry ice products such as: Pellets, Rice Pellets (Dry Ice Blasting),
Micro Pellets, 1/4 inch , Special Cut Blocks, Slices, Nuggets and High Density