Figure 2: H and E staining results; osteoblasts (red arrow), osteocytes (black arrow), osteoclasts (triangle). (a) Negative control; (b) Positive control: (c) BHA-Gel-HPMC (d) BHA-Gel-HPMC-Alendronate. HPMC: Hydroxypropyl ethylcellulose, BHA: Bovine hydroxyapatite