Ach	Acetylcholine
ANOVA	Analysis of variance
BCIP	5-bromo-4-chloro-3′-indolyl phosphate
BDNF	Brain-derived neurotrophic factor
ERK	Extracellular signal-regulated protein kinase
GFP	Green fluorescent protein
HBC	Horizontal basal cell
MC	Microvillous cell
MOE	Main olfactory epithelium
NBT	Nitro blue tetrazolium
NGF	Nerve growth factor
NT	Neurotrophin
NT-3	Neurotrophin-3
NT-4	Neurotrophin-4
NTR	NT receptor
OB	Olfactory bulb
OSN	Olfactory sensory neuron
PBS	Phosphate-buffered saline
PFA	Paraformaldehyde
PI3K	Phosphatidylinositol-4,5-bisphosphate 3-kinase
PLCγ	Phospholipase Cγ
qPCR	Quantitative polymerase chain reaction
SC	Supporting cell
SD	Standard deviation
RISH	RNA in situ hybridization
RT-PCR	Reverse transcription polymerase chain reaction
Trk	Tropomyosin receptor kinase
TRPC6	Transient receptor potential channel C6
TRPM5-MC	Transient receptor potential channel M5-expressing microvillous cell