Briefly, the HPMECs (10 × 104 cells/well) were seeded into 24-well plates, which were covered with 120 μl of polymerized matrigel (Corning, 354234). Then the HPMECs were treated with 1 μg/ml LPS with or without 50 ng/ml of FGF2. After incubation for 3.5 h at 37 °C under 5% CO2, images were captured with an Olympus CKX41 light microscope. Each experiment was performed at least three times.
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