Copyright information:Taken from "Metabolic mapping by use of high-resolution magic angle spinning H MR spectroscopy for assessment of apoptosis in cervical carcinomas"BMC Cancer 2007;7():11-11.Published online 17 Jan 2007PMCID:PMC1781459. Each point represents the data of a single biopsy. In (A) the color code for apoptotic cell densities (cells/mm) is shown. The Pearson correlation coefficient and -value are marked in (B). Total residual y-variance and root mean square error of prediction were minimised by retaining 11 PCs in the model. These 11 PCs accounted for 98% of the total x-variation, and 92% of the total y-variation. An informative loading profile could not be generated due to the high number of principal components that were retained in the model.