Age-related spatial differences of human lens UV filters revealed by negative ion mode MALDI imaging mass spectrometry: Supplemental Information

Example spectra of (a) on-tissue MALDI-MS/MS (negative ion mode), (b) LC-MS/MS (positive ion mode), and SRM analysis (positive ion mode) for 4-(2-amino3-hydroxyphenyl)-4-oxobutanoic acid O-B-D-glucoside (AHBG).