Assertion: apical ectodermal ridge | /r/CapableOf | form at distal end of each limb bud
Facets:
value: from the ectodermal cells
type: OTHER
Source sentences:
text: The apical ectodermal ridge (AER) is a structure that forms from the ectodermal cells at the distal end of each limb bud and acts as a major signaling center to ensure proper development of a limb.