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. Author manuscript; available in PMC: 2014 Jun 2.
Published in final edited form as: Brain Res. 2011 Jun 14;1404:55–62. doi: 10.1016/j.brainres.2011.06.021

Figure 2. Expression of μ-opioid receptor is not detectably changed after PSA removal.

Figure 2

A: Graph showing the surface area (mm2) of μ-opioid receptor immunostaining in the substantia gelatinosa as measured by NIH-Image program in spinal cross-sections 1 day after vehicle or endo-N-treatment (3 animals each, 3 sections per animal). As shown in B, the density of staining was also assessed in these sections. Both parameters remain unchanged.