Skip to main content

Table 2 Significance of differences in values presented in Table 1

From: Characterization of biofilm-like structures formed by Pseudomonas aeruginosa in a synthetic mucus medium

Variablea Image stacks (#)b Total biovolume (μm3/μm2)b Mean thickness (μm)b Roughness coefficientb Total surface area × 107 (μm2)b Surface to volume ratio (μm2/μm3)b
Time (under 20 % EO 2 )
3d vs. 2d 10 Increasec 0.0002 Increase <0.0001 Decrease <0.0001 NSd Decrease 0.0027
6d vs. 2d 10 Increase 0.0002 Increase 0.0002 Decrease <0.0001 Decrease <0.0001 Decrease <0.0001
Mucin concentration (3 d under 20 % EO 2 )
2.0X vs. 1X 10 Increase 0.0002 Increase 0.0003 Decrease 0.0006 NS Decrease 0.0018
0.5X vs. 1X 10 Increase 0.0019 Increase 0.0007 Decrease 0.0011 Increase 0.0290 NS
DNA concentration (3 d under 20 % EO 2 )
1.5X vs. 1X 10 Decrease <0.0001 Decrease <0.0001 Increase <0.0001 Decrease <0.0001 Increase <0.0001
0.5X vs. 1X 10 Decrease <0.0001 Decrease 0.0002 Increase 0.0013 Decrease 0.0008 Increase 0.0124
Oxygen concentration (EO 2 ) e
10% vs. 20% 10 Increase <0.0001 Increase <0.0001 Decrease <0.0001 Decrease <0.0001 Decrease <0.0001
0% vs. 20% 10 Decrease <0.0001 Decrease <0.0001 Increase <0.0001 Decrease 0.0287 Increase 0.0482
  1. aAll strains carry pMRP9-1 and were grown without shaking.
  2. bSee Table 1 for description of parameters.
  3. cSignificant change with P value indicated below direction of change.
  4. dNS, no significant difference.
  5. e20%, aerobic; 10%, microaerobic; 0%, anaerobic; cultures were grown for 3 d, except 0% EO2 for 6d.