Figure 2

Schematic anatomical representation and histological sections of adult A. calycularis corals showing the different tissues of the gastroderm (GA), mesoglea (M), epithelia (EP) and the specific structures of nematocysts (NEM) at the oral end. Coral sections are shown after staining with: (A–C–E) hematoxylin/eosin and (B–D–F) Gomori trichrome, to act as a reference for structural detail. Scale bar 50 μm.