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Values of the zeta potential as a function of pH. (A) The control strains H2155 (▪) and H2749 (•) and the strain VTT-C-99315 expressing HFBI-Flo1 fusion protein (▴); (B) the carrier materials unmodified Siran (▴), siliconized Siran (▪), and ImmobaSil (•).
