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Alterations in endogenous opioid functional measures in chronic back pain.
Martikainen IK, Peciña M, Love TM, Nuechterlein EB, Cummiford CM, Green CR, Harris RE, Stohler CS, Zubieta JK. Martikainen IK, et al. J Neurosci. 2013 Sep 11;33(37):14729-37. doi: 10.1523/JNEUROSCI.1400-13.2013. J Neurosci. 2013. PMID: 24027273 Free PMC article.
Variation in the form of Pavlovian conditioned approach behavior among outbred male Sprague-Dawley rats from different vendors and colonies: sign-tracking vs. goal-tracking.
Fitzpatrick CJ, Gopalakrishnan S, Cogan ES, Yager LM, Meyer PJ, Lovic V, Saunders BT, Parker CC, Gonzales NM, Aryee E, Flagel SB, Palmer AA, Robinson TE, Morrow JD. Fitzpatrick CJ, et al. PLoS One. 2013 Oct 1;8(10):e75042. doi: 10.1371/journal.pone.0075042. eCollection 2013. PLoS One. 2013. PMID: 24098363 Free PMC article.