49 巻 (1980) 3 号 p. 153-155
Conditions for maintaining in vitro growth ability of M. lepraemurium which should be inoculated to ND-5 medium were studied, and the results obtained were as follows; the growth ability of M. lepraemurium in cell-free medium was maintained for 2 and 6 weeks when the bacillary suspensions were preserved at 4°C and -20°C, respectively. However this relationship between preservation condition and growth ability was considered to depend upon the property of culture medium.