Fig. 7.

OCT-based particle tracking velocimetry of non-recirculatory cilia-driven fluid flow. Note that the same embryo was imaged in Figs. 6 and 7 and only the image well water volume differs between the two image acquisition sessions. (a) shows the particle pathline image and (b) shows the two-dimensional, two-component flow velocity field. The vector arrows at the air/water interface in (b) are artifactual b, body; e, eye; h, head; ps, polystyrene microsphere; t, tail; w, air/water interface. A, anterior; P, posterior.