(A-D'') Ventrolateral (A, C, D) and lateral (B) images of the cranial vessels in lyve1b:Kaede transgenic embryos with the dorsal (A) and ventral (C) portions of the VA-L photoconverted at 54 hpf and followed through to 72 hpf (B) and 78 hpf (D). Unconverted vessels are shown in green (A-D), while photoconverted vessels are shown in red (A'-D'). The extent of lymphatic and arterial contribution from the VA-L to the LFL (B'') or HA (D'') is further clarified by false colouring the overlap between red and green fluorescence (purple), with the FLS (A'', C'') and LFL (B'', D'') demarcated (dotted line) from the adjacent vessels. Schematic included for anatomical reference. Note, for all images, the overlap of red and green fluorescence in the eye (labelled E) is due to a combination of natural pigmentation and auto-fluorescence; and is not indicative of photoconverted cells (C'', white arrowheads). 