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XPS spectra of (a) Mg 2p, (b) O 1s, (c) C 1s, (d) N 1s, (e) P 2p, and (f) Ca 2p electron energy regions on the WE43 Mg alloy after 10 min of immersion in 0.9% NaCl, PBS, and Hanks’ solutions with or without the BSA protein (4 g L–1) at pH 7.4 and 37 °C.
