Fig. 1. The amino acid sequence alignment of chick RaxL (cRaxL) and human RAX2 (hRAX2) (A). Identical amino acid residues between these two proteins are indicated by asterisks. Gaps required for optimal alignment are represented by dashes. The homeodomain is underlined. (B-Q) Whole-mount in situ hybridization of Rax (B-I) and RaxL (J-Q) on Hamburger-Hamilton stage 11 (B,C,J,K), stage 12 (D,E,L,M), stage 14 (F,G,N,O), and stage 15 (H,I,P,Q) chick embryos. (B,D,J,L) Dorsal views of the embryos; (C,E,K,M) ventral views of the same embryos. (F,H,N,P) Lateral views; (G,I,O,P) Magnified frontal or ventral views. The arrowheads and arrows indicate the retina and ventral diencephalon, respectively.

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