Figure 4.

Deletion analysis within the DEX-responsive fragment. The intact 455-bp NcoI/EcoRI fragment is denoted as wild type whereas the 5′ fragment lacking GRE1 is D1 and the 3′ fragment lacking GRE2 is D2. Constructs D3–5 represent internal deletions of GRE1, GRE2, or both GRE1 and GRE2, respectively. The values shown to the right of each construct represent the mean ± SEM induction by DEX (fold) of MRE–βGeo from five separate experiments of samples assayed in triplicate.