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Fig. 6 | EvoDevo

Fig. 6

From: Gastrulation occurs in multiple phases at two distinct sites in Latrodectus and Cheiracanthium spiders

Fig. 6

Cells internalize at the rim of the germ disc in Latrodectus species. External views of late gastrulae show internalization of prospective mesendoderm (yellow) and, in blue, examples of cells known to persist in the upper layer of the germ disc as long as their daughter cells can be visualized. Arrowheads point to cells that will internalize. df, dorsal field, region to which cumulus has migrated. Lm, L. mactans. Lg, L. geometricus. Times in min. Scale bars 200 µm. Timelapse movies of Lm embryo 1 and Lg embryo 1 are shown in Additional file 6: Movie 3 and Additional file 7: Movie 4

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