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Fig. 5. Wg and its target genes. (A-D) Wg (A; shown in green) is produced along the
DV border and induces the expression of target genes, such as Ac (B;
yellow, and expressed only in the A compartment), Dll (C; purple) and
Vg (D; red), at high, middle and low thresholds, respectively.
Anterior is to the left. (E) Schematics showing the domains of target gene
expression. Reproduced with permission from Briscoe et al.
(Briscoe et al., 2001).
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