Assertion: epithelium's structure | /r/CapableOf | transform into two-layered tissue
Facets:
value: quickly
type: MANNER
value: in most vertebrates
type: OTHER
Source sentences:
text: In most vertebrates, this original one-layered structure quickly transforms into a two-layered tissue; a temporary outer layer, the periderm, which is disposed once the inner basal layer or stratum germinativum has formed.