EMBRYONIC DEVELOPMENT & STEM CELL COMPENDIUM
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Lung >

Stem Bronchi


Lng.StBr
Primary lung buds elongate into the secondary, or stem bronchi, their numbers presage the formation of the 3 lobes of the right lung and the 2 lobes of the left lung in humans or 4 lobes on right and 1 on left in mouse.

humans: 5th week; mice: ~E10.5
Secondary Bronchi
Stem Bronchi
Multiple Ancestors Single Ancestor No Descendants Develops from Part of Parent
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