Diverse Molecular Genotypes of Mycobacterium tuberculosis Complex Isolates Circulating in the Free State, South Africa

Figure 2

Amplification products from multiplex PCR analysis for Beijing strains of M. tuberculosis. Lanes 1 (100 bp DNA ladder), 2, and 9 (negative control and amplification control), lanes 4 (Q08), 5 (Q07), 6 (Q06), 7 (Q06), and 8 (ZT71) contain three-fragment pattern characteristic for strain W and lanes 3 (ZT67), 10 (ZT67), and 11 (H37Rv) contained only two fragments generated by internal positive control primers.