lung bud

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lung bud

[′ləŋ ‚bəd]
(embryology)
A primary outgrowth of the embryonic trachea; the anlage of a primary bronchus and all its branches.
References in periodicals archive ?
In rat lung explants, RA significantly increasedthe growth, number of lung buds, and lung area of nitrofen-induced hypoplastic lungs but had no effect on controls (Montedonico et al.
Inhibitory control over Fgf10 involves sprouty (Spry2) and sonic hedgehog (Shh), which are highly diffusible factors secreted by the epithelium of the developing lung bud (Mason et al.
33 days, 7 to 9 mm), the bronchial tree develops and the lung buds elongate.
This fact supports the idea that congenital lesions, which are usually symptomatic early in life, arise from vestigial bronchi or lung buds.