[Microscopic method of the determination of Mycobacterium tuberculosis sensitivity to chemotherapeutic agents]

A microscopic method of testing M. tuberculosis sensitivity to chemotherapeutic drugs was developed and tried out. According to it, M. tuberculosis are inoculated and cultivated on agar-agar gel disks, put on a Petri dish with an egg medium and chemotherapeutic drugs. Following the incubation lasting for 5-7 days at 37 degrees C, agar-agar gel disks with inoculated material are removed from the medium and subjected to microscopic examination as to confirm or deny the growth of mycobacteria in the form of microcolonies. The developed method is simple and easy to use, and makes it possible to shorten the period of testing M. tuberculosis sensitivity to chemotherapeutic drugs up to 5-7 days since the examination is started.