A Clinical TB Detection Method Based on Molecular Typing Technique with Quality Control

Figure 1

Distribution of VNTR assays. (a) The occurrence of high-frequency array: the higher the occurrence of the arrays, the rarer they are. (b) The reasonable repetition for batches of different sample numbers: repetition in a single batch is highly improbable for most TB subtypes. (c) The change of expected occurrence along with positive sample number in one batch: the occurrence rate of a given array may be very low, but the likelihood of it occurring twice or more increases as the number of positive samples rises.