Fig. 9. (A) Fracture surface of a bulk, frozen-hydrated Galaxea fascicularis skeleton infiltrated with a NaCl-PVP solution. The interface between the skeleton (Sk) and the NaCl-PVP solution (NaCl) is depicted by a thin line. The position of the line scan across this interface is depicted by the broad line. Scale bar, 10 µm. (B) Peak to background X-ray counts (P/B; 0-2500 full scale) for Ca along the line scan shown in A.