Immunocytochemical localization of calretinin in the olfactory system of the adult lamprey, Lampetra fluviatilis.
The distribution of calretinin immunoreactive (CR-ir) structures in the adult lamprey (Lampetra fluviatilis) olfactory system was studied by using immunocytochemical techniques. In the olfactory epithelium, a subpopulation of olfactory receptor cells was CR-ir. In the olfactory bulbs, three different cell populations were observed. Large CR-ir cells (mitral cells) were located medially to the olfactory glomeruli and occasionally between them. In the inner cellular layer, two types of CR-ir perikarya were found: numerous small CR-ir cells (granule cells) and some medium-sized CR-ir cells (putative displaced periglomerular cells). In addition, different intensities of CR-ir fibers were present in particular rootlets of the olfactory nerves, as well as in particular glomeruli. The presence of CR-ir cells and fibers in all layers of the lamprey olfactory bulbs supports the idea that this protein is present in pathways underlying the processing of sensory information throughout evolution.
Pombal
M A
MA
Department of Functional Biology and Health Sciences, Faculty of Sciences, University of Vigo, Vigo, Spain. pombal@uvigo.es
de Arriba
M C
MC
Sampedro
C
C
Alvarez
R
R
Megías
M
M
D000818:Animals; D064032:Calbindin 2; D007150:Immunohistochemistry; D007798:Lampreys / Q000378:metabolism*; D009830:Olfactory Bulb / Q000166:cytology / Q000378:metabolism; D009831:Olfactory Mucosa / Q000378:metabolism; D009832:Olfactory Nerve / Q000378:metabolism; D009833:Olfactory Pathways / Q000378:metabolism*; D018034:Olfactory Receptor Neurons / Q000378:metabolism; D064030:S100 Calcium Binding Protein G / Q000378:metabolism*; D014018:Tissue Distribution
D064032:Calbindin 2; D064030:S100 Calcium Binding Protein G