Dall’AglioC, L Pascucci, F Mercati, A Giontella, V Pedini, P Scocco, and P Ceccarelli. 2009. “Identification of Orexin A- and Orexin Type 2 Receptor-Positive Cells in the Gastrointestinal Tract of Neonatal Dogs”. European Journal of Histochemistry 52 (4), 229-36. https://doi.org/10.4081/1221.