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. 2011 Mar 23;6(3):e17916. doi: 10.1371/journal.pone.0017916

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Pontiroli 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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M. bovis BCG detected from three soils: Warwick (A), Stockton (B) and Kilkenny (C) seeded with known numbers of BCG cells. M. bovis BCG detected from badger faeces (D, F) and cow faeces (E) seeded with known numbers of BCG cells. (F) represents amplification from 1 in 10 diluted template. Note the log scale for recovered BCG. Data points are means of any positive results obtained by any of the operators. Error bars represent ±1 standard error of the mean.