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Electron micrographs of K. radiotolerans cell clusters. (A) Scanning electron micrograph. Scale bar = 20 μm. (B) Transmission electron micrograph of a stained thin section. Scale bar = 0.5 μm. (C) Transmission electron micrograph of an unstained thin section. Elemental spectra were collected along a transect (indicated by spots A to E) spanning a single cell within a cluster. Scale bar = 0.5 μm.
