Fig. 7
From: A modular steroid-inducible gene expression system for use in rice
Time course of GUS activity after induction and treatment interruption in transgenic callus. a, b) Histological detection of GUS activity in transgenic and wild-type (wt) callus. Calli were grown for 13 days on solid medium containing 10 μM DEX (a) or induced with 10 μM DEX for 3 days and then transferred to fresh solid medium without DEX for 10 days (b). Scale bars = 1 mm