Xenbase Image ID: 145017

Fig. 4. Cilia in the sea urchin gastrula embryo. Schematic of the dorsal half of a late gastrula sea urchin embryo. We speculate that archenteron (ac) cells are ciliated (A), and that cilia are polarized and produce a leftward fluid flow (B, green arrow). Nodal-expressing cells at the archenteron tip are in blue. Image published in: Blum M et al. (2014) Copyright © 2014. Image reproduced with permission of the publisher and the copyright holder. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. Larger Image Printer Friendly View

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