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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: J Neurochem. 2009 Nov 6;112(6):1431–1441. doi: 10.1111/j.1471-4159.2009.06479.x

Fig. 4. Opioid stimulation of ERK phosphorylation in NG2+OPs.

Fig. 4

After growth in DMEM/N2 + EGF/bFGF/PDGF for 6–7 days, OPs were treated in media deprived of growth factors with DAMGO (D, 1 μM) or U69,593 (U, 1 μM) for up to 24 h. (A) Representative gels of phospho-ERK and ERK (B&C) Curves of quantified ERK phosphorylation (phospho-ERK/ERK ratios). N = 4. *P<0.05, **P<0.01, ***P<0.001 vs. controls.