TABLE 7.
Tracheal ring adherence assaya
| Strain | No. of expts | Avg CFU/ ring (104) | SD (104) | Significantly different than parentb |
|---|---|---|---|---|
| Parent | 22 | 280 | 180 | NA |
| Mot− | 8 | 170 | 150 | No |
| Dnt− | 12 | 52 | 54 | Yes |
| Hag− | 6 | 13 | 9 | Yes |
a
The protocol used for attachment, incubation, washing, and subsequent quantitation of adherent bacteria is described in the text.
b
Student’s t test was applied in an unpaired test for overlapping means between the parental and mutant strains. The test failed if P was >0.05. NA, not applicable.