Non-human primate orthotopic (bone) bioassay – Histology. (A-D): samples of alveolar bone implanted with DFDBA. (E-H): Samples of alveolar bone implanted with CS-Platelet. All grafted sites, whether implanted with CS-Platelet or with DFDBA, showed regeneration of trabecular bone. In the sites grafted with DFDBA some residual biomaterial was still visible (B, black arrows). Hematoxylin and Eosin staining. (A and E, 40× original magnification). (B-D and F-H, 100× original magnification).