TABLE 3

Viable cell count

StrainViable cell count (CFU/ml)a
Untreated1 mM CHP1 mM H2O21 mM NaOCl
WTTNTC7 × 10327 × 105TNTC
ΔohrTNTC2 × 10525 × 105TNTC
ΔohrRTNTC26 × 10530 × 105TNTC
  • a TNTC, too numerous to count. The data are representative of those from two experiments.