Fig. 3From: Effect of dormancy on the development of phloem fiber clustersFormation of fiber clusters in different growth cycles. The tissues were harvested from different parts of a tree grown with three periodic dormancy phases. a Top area with single growth ring of wood. b Middle area with two growth rings of wood. c Bottom area with three growth rings of wood. d–g Magnified images of boxed areas in a–c; d shows the upper-right area in a, e shows the left area in b, f shows the right area in b, and g shows the right area in c. Arrowheads show the boundaries of growth rings. Arrows show the newly formed fiber clusters. Scale bars, 200 µmBack to article page