Figure 1 Proximal metaphysis of tibia of the control group using H&E (a, b, and c) and toluidine blue (d, e, f, and g). (a) A network of trabeculae of cancellous bone with bone marrow spaces (BM) are seen between the trabeculae (×100). (b) Osteoblasts (Ob) appear rimming the endosteal surface ‘black arrows’ (×400). (c) Osteocytes (OC) within their lacunae within bone trabeculae ‘black circles’ and osteoprogenitor (OP) cells lining endosteal surface ‘red arrows’. Toluidine blue-stained sections show (d) bone trabeculae with bone marrow spaces (BM) ‘black star’ in between (×200), (e and f) osteoprogenitor cells (OP) and osteoblasts (Ob) rimming bone trabeculae (black arrow) (×400), and (g) osteocytes (OC) in their lacunae within the bone trabeculae ‘black circles’ (×400).