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Expression of DR5::GUS in wild type NHR1 and nhr1 backgrounds. Roots were hydrotropically stimulated for 8 days in a medium with an osmotic gradient (C and D) or grown in normal medium (A and B) and stained with X-Gluc acid buffer under the same conditions for 80 min. Shown are images selected from at least 50 representative root tips. Bar = 25 µm.
