DD1-DD6 development in the embryo. Dorsal view. Bottom is left side of the embryo. Spheres indicate individual nuclei. Black sphere: ancestors of DD1-DD6; dark grey spheres: apoptotic cells; other cells follow the WA color code (after they acquire specific cell or tissue identities). 0 min is fertilization. First row: DD1-DD3 from left to right; second row: DD4-DD6 from left to right.

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by Santella, A.*, Altun, Z.F.*, Moore, J., Hall, D.H. and Bao, Z. 2013. *to whom correspondence should be addressed: santella@mskcc.org; zeynep.altun@einstein.yu.edu