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The graphs show the bacterial retrieval from biofilm formed on PE discs for (A) P aeruginosa, (B) S aureus, (C) S epidermidis, and (D) E coli. DTT treatment is similar to sonication and more efficient than scraping and NAC treatment in dislodging adherent bacteria from S aureus and P aeruginosa biofilms. CFU = colony-forming unit.
