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Inhibitory action of the experimental group against five pathogenic microorganisms. (1) NanoAg-EGF group. (2) NanoAg group. (3) Benzylpenicillin positive control group. (4) EGF group. (5) Normal control group. EGF, epidermal growth factor; NanoAg-EGF, nanosilver-epidermal growth factor sustained-release carrier; NanoAg, nanosilver-alone.
