@article{article1a4f4432,
title   = {Anxiogenic effects of substance P and its 7-11 C terminal, but not the 1-7 N terminal, inject into the dorsal periaqueductal gray},
author = {Araújo, João E. de and Silva, Regina C. B. and Huston, Joseph P. and Brandão, Marcus Lira},
year = {1999},
doi = {10.1016/s0196-9781(99)00154-0},
journal   = {Peptides}
}