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Detached secondary lateral roots of 17-d-old plants of (A) wild type (Torsdag) and (B) the BR-deficient lk, (C) the BR-receptor mutant lka, (D) the BR-deficient lkb, (E) the GA1-deficient na-1, (F) the GA1-deficient ls-1, (G) and the shoot GA1-deficient le-3. The roots were collected from the most mature region of the plants, closest to the crown. The far right-hand side of the secondary lateral root is the point at which it was detached form the primary root. Bar = 1 cm.
