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Morphology of rice seedlings and cells. (A) 4-d-old dark-grown seedling. (B) 6-d-old light-grown seedling. (C) Morphology of coleoptile epidermal cells. (D) Morphology of first leaf epidermal cells. Scale bar = 1 mm (For A and B), Scale bar = 20 μm (for C and D). C, Coleoptile; L, First leaf.
