Table of Contents
ISRN Pain
Volume 2013 (2013), Article ID 196429, 6 pages
http://dx.doi.org/10.1155/2013/196429
Research Article

Opioid Mechanism Involvement in the Synergism Produced by the Combination of Diclofenac and Caffeine in the Formalin Model

Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Avenida 25 de Julio No. 965, Colonia Villa San Sebastián, 28045 Colima, Col, Mexico

Received 25 March 2013; Accepted 17 April 2013

Academic Editors: C.-L. Hsieh, A. Royuela, and M. Tsuruoka

Copyright © 2013 José María Flores-Ramos and M. Irene Díaz-Reval. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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