Figure 1: 16S rDNA RFLP using BamHI digested DNA from the following mycobacteria: A, rapidly grower Mycobacterium fortuitum ; B, slow grower M. kumamotonense . The probe used targets a conserved region of the 16S rDNA gene, and hybridizes with a single fragment of that gene after digestion with BamHI. Fragment sizes (in kbp) are indicated on the left.