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. 2015 Dec 19;15(12):32045–32055. doi: 10.3390/s151229909

Figure 5.

Figure 5

Relative frequency shift response to the different cell concentrations. (A,C) The bare SAW resonator response to cell with concentrations of 3000, 6250, 12,500, 25,000 and 50,000 in 100 µL media for each test, A549 (A) and RAW 264.7 (C). (B,D) The SAW resonator coating with ZnO layer response to cells with concentration of 3000, 6250, 12,500, 25,000 and 50,000 in 100 µL media for each test, A549 (B) and RAW 264.7 (D). Data are plotted as mean ± 95% CI. The data are representative of a study that was performed in triplicates and performed at least two independent times. A student’s t-test was used to evaluate significance (p ≤ 0.05). * indicates a significant difference in the frequency shift between the labeled group and the adjacent lower concentration. Best fit curves were calculated using a second order polynomial model in the GraphPad Prism software application.