Al-Rodhan, Nayef R.F.;
Richelson, Elliott;
Gilbert, Judith A.;
McCormick, Daniel J.;
Kanba, Kiyoko S.;
Pfenning, Michael A.;
Nelson, Al;
Larson, Eric W.;
Yaksh, Tony L.
Structure-antinociceptive activity of neurotensin and some novel analogues in the periaqueductal gray region of the brainstem