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Effect of DAMGO on surface expression of CXCR4 in SH-SY5Y cells. Surface expression of CXCR4 in SH-SY5Y cells was assessed by flow cytometry (all experiments repeated twice). (A) Untreated = blue; DAMGO 10 μM = green; CXCL12 (1 h) = red; IgG2B-PE isotype control = grey. (B) Cells cotreated with DAMGO+CXCL12 are shown in purple.
