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Fluorescence microscopy using ultraviolet surface excitation (MUSE) image (A), digitally colorized (MUSE) image (B), and light microscopic image of corresponding hematoxylin-eosin–stained tissue section (C) of pancreatic ductal adenocarcinoma (original magnification ×100 [C]) (This image is courtesy of Richard Levenson, MD, UC Davis, Davis, California).
