ANTONIA REEVE / SCIENCE PHOTO LIBRARY ANTONIA REEVE / SCIENCE PHOTO LIBRARY
Verruca removal. Close-up of the gloved hands of a nurse using a liquid nitrogen applicator to to freeze and remove a verruca from a patient's foot. Liquid nitrogen has a temperature of minus 196 degrees Celsius. This treatment is being done after the overlying hard skin was removed with a scalpel (see C014/7761). A verruca (or plantar wart) is a rough area on the foot caused by a papillomavirus. It can be removed by cryosurgery (freezing), cutting out the infected area or applying salicylic acid plasters. Photographed in the UK at a wart clinic at a general practice (GP) surgery.
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