Fig. 6From: FLIM imaging revealed spontaneous osteogenic differentiation of stem cells on gradient pore size tissue-engineered constructsFLIM images of FAD for MSCs on a homogeneous and b heterogeneous scaffolds; c The values of fluorescence lifetime contribution of the open form of FAD during cultivation in DMEM and in osteogenic medium; × 400. *statistically significant differences compared to the corresponding time point for the MSCs on scaffolds cultivated in DMEM; #statistically significant difference in MSCs on heterogeneous scaffolds cultivated in osteogenic medium compared to the corresponding time point for MSCs on homogeneous scaffolds cultivated in osteogenic medium; Mean ± SD, p-value ≤ 0.05Back to article page