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Polar Auxin Transport.
Agarose blocks containing 10 μM [3H]NAA were placed on the shoot-root junction of the indicated 7-d-old seedlings. When indicated, blocks contained additional 10 μM TIBA. Roots were analyzed 10 h later as described in Methods. The data represent the mean ± se of n = 3 independent experiments each containing 15 plants per treatment. WT, wild type.
