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Figure 2: Neuronal marker expressed by bone marrow stromal cells. Bone marrow stromal cells were cocultivated for 5 days with GFP-positive cerebellar granule neurons (green). Immunofluorescence labeling showed that beta-III tubulin recognize by Tuj1 antibodies (red) was expressed by about 20% of bone marrow stromal cells (GFP-negative or nongreen cells) [6, 7].