Fig. 3.

Toxicity of substances released into cell media in contact with materials under study. Supernatant to determine cell viability was obtained by incubating complete DMEM media alone (control) or with 500 ​μl of the different materials in rotatory movement at 25 ​°C for 24 ​h. Cell viability assay was determined using the MTS assay on Vero cells exposed to serial dilutions of the incubated media. One way ANOVA followed by Bonferroni posttest was used to determine statistical differences. ∗∗∗: p ​< ​0.001; ∗∗: p ​< ​0.01; ∗: p ​< ​0.05; ns: not significate N ​= ​3. Error bars correspond to ±SD.