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. 2015 Dec 14;5:18208. doi: 10.1038/srep18208

Figure 2. Combination of NTP with cetuximab has no significant cytotoxic effect in EGFR-positive OSCC cell lines.

Figure 2

After overnight incubation in 96-well plates, the cells were treated with gas only or with NTP jets at 1 or 1.5 kV for 1 sec with/without 10 μg/ml of cetuximab, and then incubated for 24 h. MTT assay of the viability of (A) EGFR-expressing OSCC cell lines (MSKQLL1, SCCQLL1, HN6, and SCC25), and (B) normal human keratinocyte, HaCaT, cells as a representative normal oral cavity epithelial cell. The data represent the means ± S.D. of three independent experiments performed in triplicate. NS, not significant; *P < 0.05, **P < 0.01 and ***P < 0.001.