Fig. 3.

(A) Microarray configuration for simultaneous determination of the MTB genotype and identification of the MDR and XDR genetic determinants. Various colors show groups of elements with immobilized probes specific to wild-type sequences and mutant variants of the genes associated with drug resistance to different anti-tuberculosis drugs. (B) An example of the biochip hybridization pattern and the result of interpretation upon analysis of M. tuberculosis DNA from an extensively drug-resistant isolate of the Beijing B0/W148 genotype