Fig. 8

Bactericidal activity of H₂O₂ (filled triangle) and of H₂O₂ against chlorine-covered bacteria that were pretreated with 1% NCT for 1 min (inverted triangle). 1% H₂O₂ against S. aureus ATCC 6538, 0.3% H₂O₂ against E. coli and P. aeruginosa. Controls in phosphate buffer without additives, without (filled circle) or with chlorine cover (Asterisk). Mean values ± SD of three to four independent experiments. **P < 0.01 versus all other values. BA values calculated as in Fig. 4