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Top row from left to right: fluorescence, phase-gradient and combined images of mouse colon tissue labeled with acridine orange, acquired with 2.5× micro-objective (scale bar 24μm). See also Visualization 1 (249.1KB, AVI) for a video recorded with a frame rate of 2 fps. Bottom row from left to right, fluorescence, phase-gradient and combined images of the same sample acquired with 1× micro-objective (scale bar 60μm).
