Depth of Necrosis in Normal Cervical Epithelium After 85% Trichloroacetic Acid (TCA) Application

"* TCA is an acetic acid analogue solution (CCl3COOH) which is formed from the reaction of acetic acid (CH3COOH) with chlorine (3Cl2).~* High concentrations (85 percent) of this solution can penetrate deeply into the epidermis-dermis layer and cause cells necrosis.~* This solution (1-2 milliliter) will be applied to participants cervical tissue (ectocervix and endocervix) using cotton swab for 1-3 minutes."