The core cluster of points and “outlier”
non-core points of the RMT, IDC, and IDCm groups
represented by two principal components. Note that all the non-core
points are located on the right side of the plot. Moreover, each
non-core point, with the exception of the two points in the lower
portion of the plot (location, ≈−5, 5), are spatially close to the
IDC → IDCm progression trend. The non-core points may
well represent DNAs having a relatively high degree of structural
damage.