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Fig. 1. An overview of the cut and paste experiments reported here. (A) Isolation of primary notochord precursors. (B) Endoderm ablation. (C) Ablation of neural plate precursors. (D) Isolation of anterior half embryos. (E) Isolation of dorsal anterior quadrants. (F) Co-isolation of notochord/notoplate. (G) Muscle/notochord recombination. Crosses in B and C indicate which blastomeres were ablated. The dashed lines 1-3 represent the positions of specific cuts made to obtain D-F.





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