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Colonies forming unit (CFU) of S. aureus and E. Coli after incubation for 24 h with pristine catheter (PDMS), PDA coated catheter (PDMS/PDA) and PDA/AgNPs coated catheters at 5 (PDA/Ag 5) and 10 mg ml−1 (PDA/Ag 10) silver nitrate, respectively. (***p < 0.001).
