The change in locus and quantity of NGF and NGFR indifferent development stages modulated biologic issues in salivary gland, including the survival and maturation of neurons and the growth, differentiation and proliferation of epithelial tissue and nerve fiber. 不同发育阶段NGF及NGFR分布的部位和数量变化,调控着涎腺组织内各类神经纤维其神经元存活、成熟以及涎腺上皮组织和神经纤维的生长、分化与增殖。