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Fig. 2. Leftward fluid flow generated by rotational movement of node cilia.
(A) Lateral view of a mouse embryo at 8.0 dpc. Scale bar: 100 µm.
(B) Monocilia in the node of a mouse embryo shown at high
magnification. Scale bar: 1 µm. (C) Ventral view of the node cavity.
Anteroposterior (AP) and left-right (LR) orientations are indicated. Red arrow
indicates the direction of nodal flow. Scale bar: 10 µm. (D) Ventral
view of the node cavity, with fluorescent beads used to visualize fluid flow.
The beads move towards the left side of the node (arrow). Scale bar: 10 µm.
Image in D courtesy of Shigenori Nonaka (National Institute for Basic Biology,
Japan).