Additional file 4: Figure S2.
Clustering of PRT raw data between different assays. For the complete dataset (n = 1133), density scatterplots were draw comparing each of the three different assays with each other. Axis labels indicate raw PRT values, and the colour bar on the left indicates the density of individual datapoints. One extreme point has been omitted.
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Aklillu et al. BMC Infectious Diseases 2013 13:536 doi:10.1186/1471-2334-13-536