Fig. 3
From: Adoptive transfer of M2 macrophages reduces neuropathic pain via opioid peptides
Opioid peptide content and release from cultured macrophages following polarization. Intracellular content (a) and extracellular, released levels (b) of Met-enkephalin, dynorphin, and β-endorphin. Opioid peptide levels were measured by RIA (Met-enkephalin and dynorphin) or EIA (β-endorphin), ~18 h after polarization was completed. *p < 0.05, **p < 0.01, ***p < 0.001 (one-way RM ANOVA, Bonferroni’s test). Data show the mean ± SEM (n = 8 samples per group)