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(A) The whole plant of greenhouse-grown N. cadamba. (B) The apical, middle and basal stem segments with bark from N. cadamba. (C) Phloroglucinol staining of transverse stem section. (D) Magnified view of red box region in C. Scale bar: A = 10 cm, B = 1 cm, C = 1 mm and D = 200 μm.
