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Figure 3: Mouse fibroblast cell line (NIH/3T3) viability in 3, 6, and 24 h when in contact with AH alone and AH combined with nfTD and nfHY. Data are expressed as the mean ± SEM. Uppercase letters indicate significant differences between the AH alone and the AH nfTD and AH nfHY in the same period of time. Lowercase letters indicate significant differences in the times tested. A value < 0.05 was considered significant (Tukey’s test).