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In vivo and ex vivo PA and US image of a human carotid artery without vulnerable plaque: (a) in vivo US image; (b) in vivo overlaid US and PA image (808 nm, dynamic range 34 dB); (c) Masson’s trichrome staining of the artery sample; (d) ex vivo US image; (e) ex vivo overlaid PA/US image (808 nm, dynamic range 19 dB).
