AJ PHOTO / HOP AMERICAIN / SCIENCE PHOTO LIBRARY AJ PHOTO / HOP AMERICAIN / SCIENCE PHOTO LIBRARY
Cryotherapy. Dermatologist pouring liquid nitrogen from a metal spoon into a pot. The pot is inside a a polystyrene box, which protects her hands. The liguid nitrogen is is for use in a skin treatment. This treatment is used to remove skin tags, lentigines (sun or age spots) and in the treatment of some types of thin, slow growing skin cancers. The liquid nitrogen freezes the cells, causing them to die.
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