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Axial scans through the thrombus sample. Cartoon of sample to left. A) Photoacoustic microscopy A-line. Nominal axial resolution is 300 μm. B) Integrated photoacoustic signal, analogous to single photon fluorescence microscopy. No axial sectioning ability. C) TAUM axial line, analogous to multiphoton microscopy. Nominal axial resolution is 7 μm (twice objective Rayleigh range).
