Fig. 5
Antimicrobial activity of NPs against S. aureus. Cell viability (log CFU/mL) for S. aureus at 4–9 × 107 CFU/mL as a function of PDDA concentration for free PDDA or PDDA in the PMMA/PDDA NPs diluted from dispersions A3, A4, A5, B3, B4 and B5. Cells and NPs or free PDDA interacted for 1 h before plating for CFU counting