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Science China Press

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(a) Schematic illustration of sequential steps for yolk-shell encapsulation of cyanobacterium. (b) SEM micrograph of the encapsulated cyanobacteria with the corresponding EDX mapping for elemental Si and O. Scale bars: 2 μm. (c) Merged CLSM micrograph of encapsulated cyanobacteria, showing encapsulated, red-fluorescent cyanobacteria and green-fluorescent silica shells. Scale bar: 5 μm. (d) TEM micrograph of an encapsulated cyanobacterium, showing intracellular structures and the colloidal packing layer. Scale bar: 500 nm. (e) HAADF-STEM micrograph and FFT (inset) image of an encapsulated cyanobacterium. The FFT image indicates ordered of the colloidal packing. Scale bar: 500 nm.

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