Table 1.

BDNF in the olfactory bulb, cortex, and hippocampal formation

	BDNF-ir fibers	BDNF-ir cells	BDNF mRNA
Mitral cell layer	−	2/l	0
Internal granule layer	−	0	4/l
Glomerular layer (periglomerular)	−	1/l	2/l
External plexiform/tufted cells	−	0	0
Granule cell layer of AOB	±	2/l–m	0
Anterior olfactory nucleus	+	3/m	3–4/h
Orbital cortex	−	3/l	2–3/m
Insular cortex (granular + agranular)	−	3/l–m	3/m–h
Frontal cortex	−	3/m	3/m
Cingulate cortex	−	3/l–m	3–4/h
Piriform cortex	−	3/m	3–4/h
Parietal cortex	−	3/l	2–3/m
Perirhinal cortex	−	3/l–m	3/m–h
Retrosplenial cortex	−	3/l	3/m
Occipital cortex	−	2–3/l	2–3/m
Temporal cortex	−	3/l	2–3/m
Entorhinal cortex	−	3/m–h	3/m–h
Claustrum	±	3–4/h	3–4/h
Endopiriform nucleus (dorsal/ventral)	−	2–3/m	3/h
Tenia tecta (rostral part)	−	3/m	4/h
Tenia tecta (caudal part)	−	0	4/l
Indusium griseum	−	2/l–m	1/m
CA1-stratum oriens	++	1/l	0
CA1-stratum pyramidale	−	2/l–m	3–4/m
CA1-stratum radiatum	++	0	0
CA1-stratum lacunosum moleculare	++	0	0
CA2-stratum oriens	++	1/m	0
CA2-stratum pyramidale	−	3/l–m	4/h
CA2-stratum lucidum	+++++	0	0
CA3-stratum oriens	++	1/m	0
CA3-stratum pyramidale	−	4/m–h	4/h
CA3-stratum lucidum	+++++	0	0
Dentate gyrus-polymorph layer/hilus	+++++	1-160	1–2/h
Dentate gyrus-granule cell layer	−	4/l–m	4/m
Dentate gyrus-inner molecular layer	++++	0–1/m	0
Dentate gyrus-middle molecular layer	+	0	0
Dentate gyrus-outer molecular layer	−	0	0
Subiculum	±	2/m	3–4/m
Presubiculum	−	0	2/l
Parasubiculum	−	0	2/l

Fibers: −, none; +, very light staining; ++, light staining; +++, moderate staining; ++++, heavy staining; +++++, extremely heavy staining. Cells: 0, no cells observed; 1, occasional cells; 2, few scattered cells; 3, moderate number of cells; 4, densely packed cells;

F1-160: , could not be determined. l, Lightly stained; m, moderately stained; h, heavily stained.