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Figure 2


Fig. 2. Gene expression analysis of candidate regulatory molecules that specify the head mesoderm. (A-J) Whole-mount in situ hybridization for the indicated genes in stage 16 chick embryos. (A1-J4) Transverse sections at four levels (indicated by the dotted lines in A). (A1-J1) First branchial arch. (A2-J2) Outflow tract/second branchial arch. (A3-J3) Epithelial splanchnic mesoderm/third branchial arch. (A4-J4) Inflow tract. ba1, branchial arch 1; ba2, branchial arch 2; da, dorsal aorta; dm, dorsal mesocardium; end, endoderm; V, trigerminal ganglion; ift, inflow tract; mn, motoneuron; nt, neural tube; oft, outflow tract; ov, otic vesicle; ph, pharynx; spm, splanchnic mesoderm.





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