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Field emission SEM photomicrographs showing: (a) 200 nm hexagonal crystals of CsAg02 (Au-coated); (b) 20×100 nm lath-shaped crystals in the same sample (no coat); (c) E. coli prepared by critical point drying (CPD), before incubation with clay; (d) E. coli incubated with CsAg02 for 6 h, prepared by CPD; (e) E. coli incubated with CsAg02 for 6 h imaged with no chemical preparation; (f) close-up of E. coli showing no orientation of clay around cell wall or penetration of the bacteria.
