*4.2. Antibacterial Susceptibility*

*M. tuberculosis* drug susceptibility testing (DST) of the Rostov strain to isoniazid 1.0 mg/<sup>L</sup> (INH), rifampin 40.0 mg/<sup>L</sup> (RIF), streptomycin 10.0 mg/<sup>L</sup> (STR), ethambutol 5.0 mg/<sup>L</sup> (EMB), amikacin 30.0 mg/<sup>L</sup> (AMK), kanamycin 30.0 mg/<sup>L</sup> (KAN), capreomycin 30.0 mg/<sup>L</sup> (CAP), and ofloxacin 3.0 mg/<sup>L</sup> (OFX) was carried out using the method of absolute concentrations on solid Lowenstein–Jensen medium [30]. In addition, DST was performed by the BACTEC MGIT 960 system (BD, Sparks, MD, USA) according to the manufacturer's instructions.
