Figure 5. CXCR7 expression does not affect angiogenesis. pLEC were infected with Trans or Trans+CXCR7. At 20 h post-infection cells were trypsinized and replated onto matrigel in complete medium or serum-free medium with or without SDF-1 at 50 ng/ml. Tubule formation was analyzed at 24 h post-plating by (A) light microscopy and (B) quantitation of branch points in 3–5 wells per condition from four independent experiments. P > 0.8 for Trans vs. CXCR7 in all conditions. P > 0.2 for SFM vs. SDF-1 for both Trans and CXCR7.