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Chemotaxis assay of SH-SY5Y neuroblastoma cells (inverted microscopy, × 100).
The extracellular matrix invasion capacity of each group was assessed as the number of cells passing from the lower to the upper chamber in chemotaxis assays. Compared with the empty vector control group and blank control group (A), cell invasion capacity was significantly decreased following transfection with CXCR4-specific siRNA (B).
