Table 3.

Absorbances for reactions containing different amounts ofB. pertussis (strain Tohama I) and B. parapertussis (strain ATCC 15237)

No. of bacteriaaA450/620b
B. pertussisB. parapertussisDFPOR1DFPOR2DFPOR3
1107 0.032.22.25
10107 1.22.32.1
100105 2.252.352.4
103 103 2.32.152.25
105 1002.151.952.1
107 102.41.62.35
107 12.250.252.05
  • a CFU per reaction mixture.

  • b Average of three readings.