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. 2010 Jan 7;5(1):e8609. doi: 10.1371/journal.pone.0008609

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London 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 plot correlates the results obtained using the Growth Direct System to the visual plate counting method for samples containing varying numbers of E. coli CFU. For this blinded experiment, samples were prepared and analyzed either using the Growth Direct System or visual plate counting. The Growth Direct System results were determined after incubating for 5 hrs by one analyst. Visual plate counting results were determined after overnight growth (≥18 hr) by a second analyst.