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SEM micrographs of (a) E. coli O157:H7 attached to bare PU foam, (b) S. epidermidis attached to bare PU foam, (c) E. coli O157:H7 attached to FSCNSs-coated PU foam, and (d) S. epidermidis attached to FSCNSs-coated PU foam after 8 h exposure to bacteria.
