Assertion: membrane's layer | /r/HasProperty | bound by attachment
Facets:
value: together
type: MANNER
Source sentences:
text: In both Homoscleromorpha and Eumetazoa layers of cells are bound together by attachment to a carpet-like basal membrane composed mainly of "type IV" collagen, a form of collagen not found in other sponges – although the spongin fibers that reinforce the mesohyl of all demosponges is similar to "type IV" collagen.