Figure 6

μXRF image of a frozen-hydrated Glochidion cf. sericeum leaf cross-section displaying elemental maps for Ca, K, Ni, Co and Mn. Area: 4.90 × 0.66 mm, with a step size of 1 μm and a per-pixel dwell of 1.30 ms. The maps were flattened to the Compton map to correct for differences in sample thickness and density. Scale bar 1000 μm.