Figure 5From: Intradiscal injection of simvastatin retards progression of intervertebral disc degeneration induced by stab injuryRepresentative H&E (4× and 20×) and safranin O stainings (10×) of disc samples from different experimental groups at two weeks after drug injection. Discs in the treatment groups were treated with either 2 μL of gel alone or gel loaded with simvastatin (SIM; 5 mg/mL) at four weeks after disc stab with 21-G needle. SO = safranin O.Back to article page