Seeking to improve the laboratory diagnosis of Cutaneous Tuberculosis, a study was carried out on the application of PCR technique in macerated, decontaminated (with 4% H2SO4 for elimination of normal microbiot), neutralized (with 4% NaOH) biopsies tissues samples stored at -20°C. Of the 37 samples submitted for study, 16.22% were positive by microscopy for acid-fast bacilli (concentrated method) and in 43.24% ...