Stress-Induced Antinociception in Fish Reversed by Naloxone Wolkers, Carla Patrícia Bejo ; Barbosa Junior, Augusto ; Menescal-de-Oliveira, Leda ; Hoffmann, Anette Abstract Publication: PLoS ONE Pub Date: July 2013 DOI: 10.1371/journal.pone.0071175 Bibcode: 2013PLoSO...871175W