. When dry, hold fold of skin tightly between the thumb and forefinger until it becomes pale. . Using the sterile blade, make a small cut through the skin surface, 5mm long and 2-3mm deep, where the bacteria is be found. . Turn the scalpel blade until it is at a right angle to the cut. . Make a small circular smear of the tissue juice
(Cover the cut with a small dressing) . When the smears are dry, gently fix with heat. . Cover the smear with the filtered carbol-fuchsin stain.
. Heat the stain until vapor just begins to rise; Don’t over heat. . Allow the smear heated stain to remain on the slide for 15 min. . Wash off the stain with clean water. . Decolorize the smear with 1% V/V acid-alcohol for 10 min. . Wash off with clean water. . Cover the smear with malachite green stain for 1-2 min. . Wash off the stain with clean water. . Wipe the back of the slide clean, and place in a draining rack for the smears to air-dry (protect from direct sun light). . Examine the smear under microscope with 100X objective. NB: The bacteria is not cultured in artificial media; but can be cultivated in vivo by inoculation into the foot pads of mice and Armadillos. The animal develops slow-growing granulomas at the site of injection.