Fig. 3From: Antimicrobial and cleaning effects of ultrasonic-mediated plasma-loaded microbubbles on Enterococcus faecalis biofilm: an in vitro studya Light microscopic images of PMBs. b The effective diameter of PMBs at 1d, 3d, 5d and 7d. c, d Comparison of NO, H2O2 concentrations in PMBs with and without ultrasound treatment (p < 0.05)Back to article page