Central injection of endomorphin-2, but not endomorphin-1, increases food intake in chicks via μ1-opioid receptors
Takashi BungoKoh-Ichi DodoTomofumi Izumi
Journal of Poultry Science
44
2
205
208
10.2141/jpsa.44.205
https://doi.org/10.2141/jpsa.44.205