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. 2015 Apr 24;10(4):e0124507. doi: 10.1371/journal.pone.0124507

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© 2015 Fan et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 3 — The assay was performed using simple heat-treated DNA samples from pre-enrichment simulation stool specimens spiked with different levels of S. Typhi (CT18) ranging from 2×10⁷～2×10¹ CFU/g (sample 1–7); 8 is the negative control without the target DNA. The amplification curves of sample 1 and 2 are overlapping.