(a) FIB cross section after 24 h of immersion in RPMI-1640 media (cell culture conditions) showing nanoporous surface, (b) EDS spectra corresponding spot 1, (c) EDS spectra corresponding line scan 1, (d) RPMI-1640 + 20 vol% FBS media, (e) EDS spectra corresponding spot 2, and (f) EDS spectra corresponding line scan 2.
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