抄録
Morphological features of Mycobacterium lepraemurium cultivated on a slide glass in a cell-free liquid medium, NC-5, were precisely observed by a scanning electron microscope. As previously demonstrated, elongation of bacterial cell was noted in the second weeks of cultivation, and thereafter septum formation, division, budding and branching followed. It was obvious that the growth grade of bacilli depended upon the number of bacilli presented on the slide glass ; when a small number of bacilli was inoculated on the slide glass, a micro-colony was formed in 10 weeks' cultivation, but further development did not occur even if cultivation was continued.
