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Fig. 2. The coordinately expressed brk, vnd and rho enhancers share sequence motifs. Embryos in A, C and E express lacZ fusion genes containing the enhancer sequences indicated in B (brk, 498 bp), D (vnd, 348 bp) and F (rho NEE, 299 bp), respectively. Reporter gene expression was visualized by in situ hybridization, as described in Fig. 1. The three enhancers direct similar lateral stripes of lacZ expression. Each enhancer contains at least one copy of each of: CTGWCCY (indicated in green) and binding sites for Dorsal (black), Su(H) (red) and Twist (CA-core E-box, blue). Ventrolateral views of cellularizing embryos oriented with anterior to the left and dorsal up are shown.





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