Fig. 2From: Two-photon FLIM of NAD(P)H and FAD in mesenchymal stem cells undergoing either osteogenic or chondrogenic differentiationOverlapped two-photon excited autofluorescence (green) and SHG (red) images of undifferentiated MSCs, and MSCs during osteogenic and chondrogenic differentiation on day 21. The image size is 130 × 130 μm (512 × 512 pixels). MSCs mesenchymal stem cellsBack to article page