Abstract
The 5-aminolevulinic acid (5-ALA) as well as other photosensitizer agent (as m-THPC clorines (Foscan) and other) have been studied in the leveI of topical application as a prodrug or associated drug specific for Photodynamic therapy (PDT) (DE ROSA, F.S. et al., 2003); (GARCIA, F.S. et al., 2003); (TEDESCO, A.C. et al., 2003); (PIERRE, M.B. et al., 2001); (PIERRE, M.B. et al., 2001); (DE R…