Figure 4.

Enumeration of biofilm-associated bacterial survival for gram-negative Pseudomonas aeruginosa (A) and Ralstonia pickettii (B) as well as gram-positive Staphylococcus aureus (C), Staphylococcus epidermidis (D) under varying concentrations of both human serum and PI with treatment for 5 minutes. The ranges of tested concentrations for PI (0%-75%) and serum (1.56%-12.5%) are represented on the x-axis and y-axis, respectively. Data are represented as mean bacterial survival in log (CFU/mL) in the z-axis from 3 experimental replicates and 8 treatment replicates per experiment. Note: PI refers to 10% povidone-iodine or full-strength Betadine.