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. Author manuscript; available in PMC: 2014 Mar 15.
Published in final edited form as: Neuroscience. 2009 Jul 2;163(4):1233–1241. doi: 10.1016/j.neuroscience.2009.06.056

Fig. 2.

Fig. 2

Microinjection of cobalt chloride (CoCl2) into the vlPAG 24 h after induction of inflammation increased the mechanical withdrawal threshold of the paw. The effect of CoCl2 peaked 30 min after microinjection and lasted through 90 min.