Processing of the skin biopsies and determination of viability using FD-EB
M. canis-containing suspensions were obtained after biopsy processing and 0.1 ml aliquots were added to equal aliquots (v/v) of FD (5 µg/ml) and EB (50 µg/ml) in phosphate buffered saline (PBS) prepared shortly before use (Restrepo et al.35; Corrêa, 10). One drop of the mixture containing skin fragments and the reagents was placed between a slide and coverslip and the material was examined with a fluorescence microscope.