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. 2013 Sep 6;10:53. doi: 10.1186/1742-9994-10-53

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Copyright © 2013 Kaul-Strehlow and Stach; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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3D reconstruction of the embryo of Saccoglossus kowalevskii at 36 h pf. Rows from left to right: dorsal, ventral, left, and right view. Columns from top to bottom: The merge row (A-D) shows the embryo with all reconstructed structures. Ectoderm row (E-H) shows external shape of embryo, telotroch not shown. Endoderm row (I-L) reveals the transparent endodermal tissue (light green) and the position of the endodermal lumen (yellowish green). Mesoderm row (M-P) shows the position of the anterior protocoel (blue) and the primordal meso- (pink) and metacoelic (red) tissue. Download interactive 3D-PDF as Additional file 1.