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. 2019 Jul 25;14(7):e0219698. doi: 10.1371/journal.pone.0219698

Fig 1. The first two principal components of the PCA based on the RPKMs of the coding genes.

Fig 1

The areas are the convex hulls of the conditions. The largest point of one color depicts the center of a hull. A, B, and D are the same PCA analysis with the same coordinates, where in D all conditions except OA are visible, in A and B only three of them for a better overview. C is a PCA with OA, where four conditions are shown to depict the variability of OA. Number of samples: 10 arthralgia, 57 earlyRA, 95 establishedRA, 27 normal, 22 OA, 19 RAtripleDMARD and 6 UA.