Fig. 5
From: Platelet-rich plasma alone is unable to trigger contact osteogenesis on titanium implant surfaces
Representative histological images (haematoxylin and eosin staining) of bone formation in the experiment to evaluate the influence of substances from blood and bone. A In the implant-only group, normal bone formation was observed around the SLA Ti implants. B In the Ti tube + implant group, there were many areas between the implant threads with no bone formation. C In the Ti tube + implant + PRP group, no bone formation was observed between many of the implant threads despite the PRP injection. D In the Ti tube + implant + rhBMP-2 group, bone formation (white arrowheads) was clearly observed. Scale bars = 500 μm