FIG 4.

Lack of an effect of dnaK on biofilm biomass and desiccation resistance. (A) Biofilm formation was assessed using a crystal violet staining assay. The biofilm was stained with 1% crystal violet, and the absorbance was measured at 570 nm. The assays were biologically repeated three times. (B) Changes in the number of surviving bacteria after 7, 14, and 21 days of treatment in a dry environment were determined by serially diluting and plating the bacteria. The assays were biologically repeated three times. ns, no significant difference. (C) Changes in the number of surviving bacteria after 7, 14, and 21 days of treatment in infant formula powder were determined by serial dilution and plating of the bacteria. The assays were biologically repeated three times.