Davis, H., Taylor, A.A. & Norris, C. Psychon. Bull. Rev. 4, 118–120 (1997).
van Driel, K.S. & Talling, J.C. Behav. Brain Res. 159, 243–245 (2005).
Langford, D.J. et al. Nat. Methods 7, 447–449 (2010).
Sergeant, M.J.T. Vitam. Horm. 83, 25–45 (2010).
Zeng, X.-N., Leyden, J.J., Spielman, A.I. & Preti, G. J. Chem. Ecol. 22, 237–257 (1996).
Butler, R.K. & Finn, D.P. Prog. Neurobiol. 88, 184–202 (2009).
Lester, L.S. & Fanselow, M.S. Behav. Neurosci. 99, 756–759 (1985).
Kavaliers, M. & Innes, D.G.L. Physiol. Behav. 42, 131–135 (1988).
Akil, H., Madden, J., Patrick, R.L. & Barchas, J.D. in Opiates and Endogenous Opioid Peptides (ed. Kosterlitz, H.W.) 63–70 (Elsevier, 1976).
Hohmann, A.G. et al. Nature 435, 1108–1112 (2005).
Mogil, J.S., Sternberg, W.F., Balian, H., Liebeskind, J.C. & Sadowski, B. Physiol. Behav. 59, 123–132 (1996).
Gower, D.B., Holland, K.T., Mallet, A.I., Rennie, P.J. & Watkins, W.J. J. Steroid Biochem. Mol. Biol. 48, 409–418 (1994).
Wyart, C. et al. J. Neurosci. 27, 1261–1265 (2007).
Savic, I., Berglund, H., Gulyas, B. & Roland, P. Neuron 31, 661–668 (2001).
Frasnelli, J., Lundström, J.N., Boyle, J.A., Katsarkas, A. & Jones-Gotman, M. Hum. Brain Mapp. 32, 450–460 (2011).
Kobayakawa, K. et al. Nature 450, 503–508 (2007).
Callahan, B.L., Gil, A.S.C., Levesque, A. & Mogil, J.S. J. Pain 9, 174–184 (2008).
Sotocinal, S.G. et al. Mol. Pain 7, 55 (2011).
Mogil, J.S. et al. Pain 126, 24–34 (2006).
Lamprea, M.R., Cardenas, F.P., Setem, J. & Morato, S. Braz. J. Med. Biol. Res. 41, 135–140 (2008).