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Expression of CXCR4 in BMSCs. (a) RT-PCR results of CXCR4 expression in BMSCs from passages 1 to 8; CXCR4 was stably expressed; 293T cells as negative control; (b) immunocytochemistry results of CXCR4 expression, which indicated both membrane and intracellular CXCR4 expression; (c) the result of flow cytometry indicated only 4.2% of cells were positive for membrane CXCR4.
