Recently, a paper was published on the use of duct tape in treating warts. Success was achieved in eliminating the wart, by covering the wart for several weeks to months with duct tape. It was thought to work by acting as an irritant, causing the body to mount an immune response, in which special immune cells migrate to the site. These cells, in addition to reacting to the irritation also attack the wart. Also, sold in pharmacies are special dressings, that when used over a long period of time, reduce the presence of scar tissue; it is believed the mechanism of action is similar to that of the duct tape. Pete