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. Author manuscript; available in PMC: 2021 Jan 15.
Published in final edited form as: Acta Biomater. 2020 Jun 23;120:277–292. doi: 10.1016/j.actbio.2020.06.027

Figure 6.

Figure 6

a: PIC map of Acropora pharaonis (Ap) coral skeleton, showing sprinkles (S) concentrated at the CoCs (between pairs of CoC labels), spherulitic crystal fibers (F) fanning out from the CoCs, and concentric rings (R), which consist of finer spherulitic fiber crystals. Boxes b, c indicate the areas magnified in panels b, c. b: Magnified concentric rings, showing that these are made of nearly co-oriented acicular crystals. c: Magnified sprinkles from CoCs. d: Sprinkles at the boundary of CoCs and fiber crystals, magnified from the box area in Figure 3d. Arrows indicate two blue sprinkles that expand radially into -30° oriented fibers. Red and green sprinkles do not grow as they run into other crystals. In panels a and d pixels are 60 nm, in b and c they are 20 nm.