Fig. 6: PA imaging of lymphatic vessels in a mouse ear with Evans blue injection.

a Photograph and PA MAP images of blood and lymphatic vessels in the ear at pre-injection, 3-, 60-, 180-, and 300-seconds post-injection of Evans blue (Supplementary Movie S4). b Quantitative analysis of the change in lymph vessel area and its PA amplitude. Left, graph for the entire time period, and right, zoomed-in graph of the time range highlighted in the left graph. c Cross-sectional B-scan images along the white dotted line in (a). BV blood vessel, LV lymphatic vessel.