Systematic Investigation of Polyurethane Biomaterial Surface Roughness on Human Immune Responses in vitro

Figure 4

Scanning electron microscopy (SEM) images of immune cells adherent to polyurethane. Representative SEM micrographs of PBMCs (upper row, a-d) on polyurethane specimens P2 (VDI 14) or THP-1-derived macrophages (lower row, e-h) on polyurethane specimens P6 (VDI 39) following three days of culture.