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Figure 5


Fig. 5. Expression of Tc'hb. Wild type (A,D), Tc'KrpRNAi (B,E) and Tc'gtpRNAi embryos (C,F). Early (A-C) and late (D-F) germband stages. In wild-type embryos, Tc'hb is expressed in an anterior domain at early germband stages (A) and in a segmental register and a posterior domain at later germband stages (D). In Tc'KrpRNAi embryos, Tc'hb is expressed ectopically in a strong domain posterior to the maxillary segment (B; this embryo is much less stained than the one in A, i.e. the anterior expression domain of hunchback shows up only weakly). At later stages, the posterior expression is restricted to the prospective growth zone (E), although it remains broader than in wild-type embryos (compare with D). In Tc'gtpRNAi embryos, Tc'hb is not significantly affected (C,F), only a partial fusion of segments in the posterior region becomes visible (arrowheads in F).





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