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A. Pre- and post-ablation PA images of a tissue sample at 640, 790 and 930 nm. B. Dual wavelength images pre- and post-ablation. C. Single wavelength (C1, Visualization 1 (7.3MB, avi) ) and dual wavelength (C2) images overlaid on ultrasound. D. Photo of the tissue sample. Arrows point at the ablation sites
