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. 2017 Jul 21;10(7):840. doi: 10.3390/ma10070840

Figure 9.

Figure 9

Representative ATR-FTIR spectra of cell suspensions (a) untreated or previously treated with (b) pure SiO2; (c) SiO2/CGA, 5 wt%; and (d) SiO2/CGA, 15 wt%.