Fig. 7: Cytotoxicity characterization.
From: Pyro-catalysis for tooth whitening via oral temperature fluctuation
a–d The fluorescence microscope images of L-929 cells exposed to BTO nanowires with different concentrations for 1,2 and 3 days respectively. Dead cells appear red, while living cells appear green. e-g The viability of L-929 cells exposed to BTO nanowires with different concentrations for 1, 2 and 3 days measured by CCK-8 assay. Scale bar is 150 μm. The experiments in a-d were repeated independently for three times with similar results. Data are presented as mean values ± SD (n = 6). Source data are provided as a Source Data file.
