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Ci is required for maintenance of Hh-responsive gene expression. (A) Wild-type expression of wg mRNA, stage 11. (B) wg mRNA in heat-shocked Hs-hh embryo. (C) Expression of Wg protein in a Df(4)M62f mutant embryo, stage 11. (D) Statistical analysis of number (N) and relative percents of observed phenotypes, indicates that ci is required for Hh signal transduction.
