Figure 2From: A role of periaqueductal grey NR2B-containing NMDA receptor in mediating persistent inflammatory pain Immunostaining of NMDA receptors in PAG. Immunostaining was performed in the coronal midbrain slices containing the PAG. (A) Expression of NR2A in saline control, CFA, and CFA + Hyp treated mice. (B) Expression of NR2B in saline control, CFA, and CFA + Hyp treated mice. Scalebar (in B): A, B, 500 μM. DMPAG: Dorsomed periaqueductal gray; LPAG: Lateral periaqueductal gray.Back to article page