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Starch granule of transverse section of leaf sheath and leaf blade. Transverse sections of middle portion of leaf sheath (A) and leaf blade around the midrib (B) were stained by 1% iodine solution and observed by light microscopy. Starch granule appears dark purple (red arrowhead). OX1 indicates CRCT overexpression line, and RNAi1 indicates CRCT knockdown line. M, Mesophyll cell; P, parenchyma cell (storage parenchyma cell for leaf sheath); V, vascular bundle. Bar = 0.02 mm.
