The phage sensitivity was tested on 129 strains of rapidly growing Mycobacteria employing 17 strains of Mycobacteriophage, and the schemes of phage typing of them, which were proposed by the present authors 4 years ago, were remodeled from the practical standpoint to a considerable extent.
For the rough classification Table 1 was proposed by which the Mycobacteria examined were classified into 6 groups with different phage patterns to the 6 bacteriophages. For the more detailed classification Table 2 was proposed in which 4 groups out of the six were grouped into 2 or 3 subgroups, respectively.
The classification of 129 rapidly growing Mycobacteria by the phage sensitivity coincided very well with that obtained by the growth temperature or the acid production patterns from carbohydrates.