Human CD34⁺ cells covered with PMPs adhere to HUVECs and immobilized SDF-1.

Adhesion of human CD34⁺ cells to HUVECs (upper panel) and SDF-1 (lower panel). Before adhesion, CD34⁺ cells were not incubated (left columns) or were incubated with fresh platelets (middle columns) or PMPs (right columns). Experiment was repeated twice with similar results.