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. Author manuscript; available in PMC: 2015 Feb 14.
Published in final edited form as: Science. 2014 Jan 9;343(6172):791–795. doi: 10.1126/science.1247575

Fig. 4. Ectopic somites have trunk identity, fixed according to the Hox genes expressed in the donor PS.

Fig. 4

(A to P) At stage 5, the posterior PS expresses Hoxb3 (A) and b4 (E), but not b6 (I) or b9 (M). Ectopic somites made from posterior streak explants from these stages show a similar pattern of expression (B, F, J, and N). At stages 7 and 8, the posterior streak expresses all four genes (C, G, K, and O), as do the ectopic somites formed from it (D, H, L, and P). Arrows point to the graft region, shown magnified in the insets.