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Immunofluorescence assay of bMSCs expression. Nerve cell marker protein neuron-specific enolase (NSE), GFAP, and Nestin in situ after bMSCs were induced by free Lu and M-Lu (n = 3). The images were randomly selected. The DAPI stains the nucleus blue to locate cells, and the red fluorescence represented the nerve cell marker protein. The images were observed under a microscope at a magnification of 400 times.
