1957 Volume 26 Issue 5 Pages 238-248
1. My. ulcerans is an acid-fast bacillus measuring 1.7-7.0μ in length and 0.2-0.5μ in width. Its morphology and staining properties resemble those of other mycobacteria.
2. My. ulcerans grows on Petrognani's culture medium, Oka-Katakura's medium, Kirchner's medium and Sauton's medium at a temperature below 37°C and above 25°C (optimum temperature 30-33°C). The colonies of My. ulcerans on the culture media have an appearance similar to those of H 37 Rv. My. ulcerans does not grow on glycerine agar or glycerine broth.
3. My. ulcerans can not easily be suspended homogenously in physiological saline.
4. My. ulcerans is strongly acid-fast, and alcohol-fast, and its "Kf (Preis)" is 2-3.
5. The catalase activity of My. ulcerans is about the same intensity as that of My. tuberculosis.
6. My. ulcerans shows resistance against the influence of temperature and disinfectants in nearly the same degree as My. tuberculosis and My. leprae murium.