FIGURE 1.

Three dimensional volume renderings of a Ziziphus obtusifolia stem sample presented as an example of the CODIT framework. Sub-volumes of the larger sample can be visualized in isolation (A) or with various tissue types segmented into separate volumes (B). In Ziziphus, the rays (red) are arranged in a planar orientation, radiating out from the stem center, and create discrete sectors between vessel rows, as visualized from different perspectives, tangential in (C), oblique radial in (D), and transverse in (E). The rays form the majority of wall 3 in the CODIT framework. The AP (purple) surround the vessels (blue). Calcium oxalate crystals can be found distributed throughout the RP (green) and act as a chemical defense mechanism. Scale varies with perspective. Edges of the gray wood cube, 650 μm.