Immunodiffusion Analyses of Mycobacterium farcinogenes, Mycobacterium senegalense and Some Other Mycobacteria

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Abstract
A total of 31 strains of M. farcinogenes and M. senegalense were analyzed with 25 strains representing 10 mycobacterial species. The comparative immunodiffusion technique was employed, using 2 reference systems, 1 for M. farcinogenes and the other for M. senegalense. The slow growing M. farcinogenes and the fast growing M. senegalense strains are closely related and can not be separated into 2 celarly distinct clusters. Both species were closely related to M. fortuitum, including strains designated M. peregrinum, but clearly different from other tested mycobacterial species. The serological data are consistent with the classification of M. farcinogenes and M. senegalense, and possibly M. fortuitum, in a single species. The results are discussed within the context of other taxonomic analyses of M. farcinogenes and M. senegalense.