Fig. 4

Cell viability was confirmed when SK-N-SH cells and HS 68 cells were treated with NCP in various ways. A. The human neuroblastoma cell line (SK-N-SH) and human fibroblast cell line (HS 68) were treated with NCP in three ways. According to each method, NT (plasma non-treat) and NCP were treated for 1 min, 3 min, and 5 min, and then cultured for 24 h. DT: direct NCP treatment, PAM: plasma activated medium, DT-MC: direct NCP treatment, and media change. B. The results of the SRB assay were digitized and presented as a graph. Vertical axis: (% of NT). * Different letters (a, b, c, d) indicate statistically significant differences by one-way ANOVA (p < 0.05). The bars in this graph that have the same letters, the groups are not significant among themselves. But the bars which have different letters are statistically significant among themselves