Fig. 6

a SEM of human osteoblasts seeded on BioOss® after 1 week’s cultivation producing a typical bone matrix structure (image magnification 795x and 1980x as indicated). b SEM of human osteoblasts seeded on cancellous bone (ACB) after 1 week’s cultivation, likewise showing embedded cells in bone-typical extracellular matrix (image magnification 555x and 1300x as indicated). c After 3 weeks of cultivation, extensive osteoblast growth is visible on the BioOss®-surface (image magnification 600x and 2840x as indicated). d After 3 weeks of cultivation on cancellous bone (ACB), broad cell growth on the surface and matrix deposition are visible, although to a lesser extent than in the BioOss® group (image magnification 1880x and 4350x as indicated)