Figure 5.

Endometriosis decreases Mu opioid receptor (MOR) expression in the spinal cord. A, Regardless of exposing the animals to stress, the endometriosis by itself decreased MORs cells labeling in the endo animals compared to the sham-no stress animals reaching statistical significance (*P < .05 vs sham-no stress animals). Representative MOR immunofluorescent staining of the lumbar region in (B) sham-no stress animals and (C) endo-no stress animals (1:100 at 400×; n = 11-12 ± standard error of the mean [SEM]).