MCR analysis results of cDNA microarray exhibiting contamination fluorescence. Fluorescence of all species was excited simultaneously in a single scan with 532 nm laser. (a) MCR extracted pure component spectra representing glass, Cy3, Cy5 and a contaminant. Inset shows ~30000 raw spectra in the image data cube used to determine the pure component spectra. (b) Extracted concentration maps corresponding to each of the pure component species in Fig. 2a. Resulting HSS intensities have been scaled to match the individual channel intensities seen on the Axon 4000B microarray scanner.