Fig. 3From: Multivariate Analysis of ToF-SIMS Data from Multicomponent Systems: The Why, When, and HowPC1 scores and loadings from a DNA spot on an NHS functionalized slide. a PC1 scores image. b PC1 loadings. The bright areas correspond with peaks of the form CxHyOz. The dark regions correspond with nitrogen containing peaks as well as PO2 and PO3 peaks from the DNABack to article page