@article{article470cbb60,
title   = {Neuroanatomical approaches of the tectum-reticular pathways and immunohistochemical evidence for serotonin-positive perikarya on neuronal substrates of the superior colliculus and periaqueductal gray matter involved in the elaboration of the defensive behavior and fear-induced analgesia},
author = {Coimbra, Norberto Cysne and De Oliveira, R. and Freitas, R. L. and Ribeiro, S. J. and Borelli, Karina Genaro and Pacagnella, R. C. and Moreira, Jorge Eduardo and Silva, L. A. da and Melo, L. L. and Lunardi, Laurelúcia Orive and Brandão, Marcus Lira},
year = {2006},
doi = {10.1016/j.expneurol.2005.08.022},
journal   = {Experimental Neurology}
}