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Figure 4


Fig. 4. Specificity of Krox20 activation by Hox proteins. (A-D) Flat-mounted chick hindbrains in situ hybridized with a Krox20 probe after electroporation with constructs expressing Hoxa1 (A), Hoxb1 (B), Hoxa2 (C) or Hoxb9 (D), respectively. The hindbrains are shown rostral up and were electroporated on the left side. r, rhombomere.