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Score plot and loading profiles (dotted arrows) from PCA of HR-MAS MR spectra and expression of genes encoding proteins in the choline pathway in the xenograft tissue samples. a) Bi-plot of PC2 and PC3 from HR-MAS MR spectra (N = 33). b) Bi-plot of PC1 and PC2 for selected genes contributing to choline metabolism. HR-MAS MR, high resolution magic angle spinning magnetic resonance; PCA, principal component analysis.
