Fig. 2

Activity of LL-37/CS in vitro. a-b. NIH3T3 cell viability was evaluated by the CCK-8 assay for 24 h and 48 h. NIH3T3 cells were treated with CS, LL-37 and LL-37/CS or PBS (control) (n = 6). There was no significant difference between the groups. c. Inhibition of TNF-α expression in RAW264.7 cells. Controls are cells without any addition. d. The antimicrobial results are given as the inhibition zones of bacteria relative to the control among the five groups. *P < 0.05 and **P < 0.01 compared with LPS group