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Table 4 P-values for difference between P. aeruginosa PA14 biofilm survival ratio after tobramycin treatment of different durations. * indicates P < 0.01 and ** indicates P < 0.001

From: Influence of biofilm growth age, media, antibiotic concentration and exposure time on Staphylococcus aureus and Pseudomonas aeruginosa biofilm removal in vitro

   TSB CaMHB
Biofilm age (hours) Treatment durations (days) 1 2 4 7 1 2 4 7
24 1 0.553 0.188 0.578 0.042 0.535 0.309
2   0.220 0.518   * 0.218
4    0.101    0.113
7       
72 1 * ** ** 0.016 ** **
2   ** **   0.128 *
4    **    0.233
7