Fig. 5

Bactericidal activity of 1% NCT (filled square), 1% H₂O₂ (filled triangle), and 1% NCT plus 1% H₂O₂ (inverted triangle) at pH 7.1 and 37 °C in the presence of 10 mM sodium azide (NaN₃). Control in phosphate buffer plus 10 mM NaN₃ (filled circle). Mean values ± SD of three (E. coli) to four (S. aureus) independent experiments. **P < 0.01 versus all other values. BA values calculated as in Fig. 4