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Fig. 5. Expression of endodermal and prechordal plate markers in MZoep gastrula following tar* and tar*+XFD RNA injections. Views of MZoep gastrulae (stage indicated above and genes analyzed in the bottom right-hand corner). (A,D,E,H,I,L) Animal pole views with ventral towards the top; (B,C,F,G,J,K) dorsal views with the animal pole towards the top. (A-D) Uninjected embryos. (E-H) tar* RNA-injected embryos. (H) The rescued prechordal plate expression of bmp4 is indicated (arrowhead in H) and the remaining bmp4 expression is in the non-neural ectoderm. (I-L) tar*+XFD RNA injected embryos.