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TCH4::GUS expression in bri1-2 and det2-1 mutants. 5-Bromo-4-chloro-3-indolyl β-d-glucuronide (X-Gluc) staining of wild-type, bri1-2, and det2-1 plants harboring the −958 to +48 TCH4::GUS transgene. Seedlings were grown for 8 d under 24 h of light (light, top) or in the dark (dark, bottom) for 3 d. The bar in each panel = 1 mm.
