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. 2014 Feb 14;4:4097. doi: 10.1038/srep04097

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(a) Relative cell viability vs. time for SLG/Cu, BLG/Cu and Cu samples; (b) Concentration of Cu²⁺ ions in cell culture medium after incubation with SLG/Cu. BLG/Cu and Cu samples calculated from ICP-MS. Medium taken from a regular cell culture without presence of any Cu foils is used as the control.