title: Localization of methionine-enkephalin, substance P, and somatostatin immunoreactivities in the main olfactory bulb of the hamster.
abstract: Methionine-enkephalin, substance P, and somatostatin immunoreactivities are associated with different classes of neurons in the main olfactory bulb of the hamster. In the glomerular layer, methionine-enkephalin immunoreactivity is observed in the somata and dendrites of periglomerular cells whereas substance P immunoreactivity is present in the somata and dendrites of external tufted cells. Substance P immunoreactivity may also be present in the superficial short axon cells. In the deeper layers, methionine-enkephalin immunoreactivity is observed in a mixed population of neurons which appear to be primarily granule cells, whereas somatostatin immunoreactivity is present only in deep short axon cells. Methionine-enkephalin-, substance P-, and somatostatin-positive fibers of central origin are also observed in the main olfactory bulb.
mesh_terms: D000818:Animals; D001370:Axonal Transport; D006224:Cricetinae; D003712:Dendrites / Q000378:metabolism; D004723:Endorphins / Q000378:metabolism*; D004744:Enkephalin, Methionine; D004745:Enkephalins / Q000378:metabolism*; D007124:Immunoenzyme Techniques; D008297:Male; D008647:Mesocricetus; D009412:Nerve Fibers / Q000378:metabolism; D009474:Neurons / Q000378:metabolism; D009830:Olfactory Bulb / Q000378:metabolism*; D009833:Olfactory Pathways / Q000378:metabolism; D013004:Somatostatin / Q000378:metabolism*; D013373:Substance P / Q000378:metabolism*
chemical_list: D004723:Endorphins; D004745:Enkephalins; D013373:Substance P; D013004:Somatostatin; D004744:Enkephalin, Methionine