Carnosine-like immunoreactivity in the olfactory bulb of the rat: an electron microscopic study.

Carnosine-immunoreactive primary olfactory nerve terminals are demonstrated in the glomerular layer of the rat olfactory bulb by immunoelectron microscopy. Asymmetrical synapses between dendrites of mitral/tufted cells and that of periglomerular cells could be observed. In the accessory olfactory system, carnosine-like immunoreactivity is also detected in the vomeronasal neurons.