Pengaruh Pemberian Platelet-Rich Plasma (PRP) terhadap Regenerasi Saraf Motorik Tikus Model Skiatika. Kajian terhadap Densitas Neuron dan Ekspresi Protein S100B = The Effect of Platelet-Rich Plasma (PRP) on Motoric Nerve Regeneration of Sciatic Rat Model. Focus on Neuron Density and S100B Expression