Fig. 1From: The use of digital PCR to improve the application of quantitative molecular diagnostic methods for tuberculosisHomogeneity assessment of ten randomly selected tubes of (a) TB Control Plasmid (b) H37Rv gDNA, (c) BCG/ASM and (d) Total MTB control. * solid line depicts mean value and 95 % CI measured using colony forming units. ** solid line depicts value and range provided by the product sheetBack to article page