Peterson ME, Kemppainen, RJ, Orth DN: Plasma concentrations of immunoreactive proopiomelanocortin peptides and cortisol in clinically normal cats. (animalendocrine.com)
The goal of the present study was to provide a comprehensive and quantitative description of neurons immunoreactive for gamma - aminobutyric acid (GABA) in the inferior colliculus (IC) of the cat. (semanticscholar.org)
These results provide evidence of the release of human immunoreactive beta - endorphin in vivo and suggest that naloxone - reversible pain relief achieved by stimulation of the periaqueductal gray matter may be in part mediated by the activation of beta - endorphin - rich diencephalic areas. (science.sciencemag.org)