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. 2012 Mar 5;7(3):e32836. doi: 10.1371/journal.pone.0032836

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O'Sullivan 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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The graphs show the peak areas obtained for C₂₉/C₃₀ and C₃₂ mycocerosates generated from spiking 0.2 mL of pooled TB negative sputum samples with PDIM standard, (A) in the range 0.14–2.75 ng, and (B) expanding the range between 0.14–27.5 ng.