Effect of Methotrexate Injection on Orthodontic Tooth Movement: An Experimental Study on Rats

Figure 4

The result of HE staining. Blood vessels and osteoclasts in (a) negative control, (b) positive control, (c) methotrexate 0.75 mg/kg, (d), and methotrexate 1.5 mg/kg. Scale bar 20 µm.