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. 2012 Aug 15;7(8):e42065. doi: 10.1371/journal.pone.0042065

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© 2012 Swanson 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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(a) Sample clustering of patients that went on to develop ventilator-associated pneumonia (blue) and those that did not (red) using principal component analysis of 810 differentially expressed genes. (b) Sample clustering of patients that went on to develop ventilator-associated pneumonia (blue) and those that did not (red) using principal component analysis of 5 genes that were common to all sets in the cross validation tests.