Neurocalcin immunoreactivity in rat olfactory bulb.

Neurocalcin, a newly discovered calcium-binding protein belonging to the recoverin-like superfamily, was detected immunohistochemically in tufted cells from the rat olfactory bulb. More precisely, only periglomerular tufted cells and some tufted cells from the external plexiform layer were expressing neurocalcin. Western blot analysis has confirmed the presence of neurocalcin in rat olfactory bulb. Lack of neurocalcin immunoreactivity in mitral cells and periglomerular cells favor a different phylogenic origin between tufted and mitral or periglomerular cells.