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In vivo PAM images of a mouse ear. Top-view PAM images before (a) and after (b) injection of silicone oil. Side-view PAM images before (c) and after (d) injection of silicone oil. (e) Normalized PA amplitude along the dashed line in (c). (f) Normalized PA amplitude along the dashed line in (d). Corresponding features in (e) and (f) are labeled with numbers. (g) Overlay of (e) and (f) with the corresponding time axes, as indicated by the arrows.
