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. 2015 Mar 9;112(12):E1453–E1460. doi: 10.1073/pnas.1414577112

Fig. 2.

Fig. 2.

Flattened surface cells and base or holdfast. (A, 1 and 2) Scanning electron micrograph close-up views showing flattened surface cells; the yellow circles indicate the gaps and pores between cells. (B) External edge of the funnel. (B, 1 and 2) Scanning electron micrograph close-up views of the rim of the funnel indicated by the arrow in Fig. 1 B, 3, showing that body wall is three to six cells thick. (C) Base or holdfast of specimen. (C, 1) Digital PPC-SR-μCT section showing regionally distinctive areas (indicated by pink frames) within the basal portion of the specimen. (C, 2) Digital PPC-SR-μCT section close-up of the area indicated in C, 1 showing the boundary between the outer layer of the cells and the inner structural material. (C, 3) Digital PPC-SR-μCT section close-up of the area indicated in C, 1 showing the differentially structured domain within the parenchymal material, which appears in the computational cross-section as a disk containing low-density dark spots that may be cavities or cells.