The composite MTC PCR typing panel. Illustrated is the MTC PCR typing panel output pattern for A) a typical M. tuberculosis strain, B) a secondary pattern seen in some Cameroon genotype M. tuberculosis strains from Ghana, C) a typical M. africanum West African-1 strain, D) a typical M. africanum West African-2 strain, and E) a typical M. bovis strain . PCR products and the 100-bp ladder (unlabelled lanes) were visualized by agarose gel electrophoresis and ethidium bromide staining. Lanes: 1, 16S rRNA; 2, cfp32 (Rv0577); 3, MiD3 (IS1561'); 4, RD4 (Rv1510); 5, RD7 (Rv1970); 6, RD1 (Rv3877-Rv3878); 7, RD9 (Rv2073c); 8, RD12 (Rv3120). WA - West African.