Fig. 4From: Vertical ridge augmentation using a porous composite of uncalcined hydroxyapatite and poly-DL-lactide enriched with types 1 and 3 collagenHistological (magnified image). A u-HA/PDLLA + types 1 and 3 collagen. B u-HA/PDLLA. a, material; b, newly formed bone; ←, osteoblast; m, bone marrow cell; *, foreign body giant cellBack to article page