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Energy-dispersive X-rays spectroscopy (EDS) coupled SEM images (1000× magnification) of CS, CS-HACS and CS-HACS-AgNWs hydrogels incubated in SBF for 7, 14 and 21 days. Control samples were incubated in water for 5 h. Images show an overlay of SEM pictures with EDS data: Ca (green), P (red) and co-localisation of Ca/P (yellow).
