Assertion: cell wall's function | /r/HasProperty | defined
Facets:
Source sentences:
text: The shapes and functions of these cells is defined and determined at the time of differentiation (the topic is more complex).
text: It has been demonstrated that two families contain members that have the ability to extend walls (EXPA or α-expansin, and EXPB or β-expansin), whereas the functions of the other two related families (EXLA and EXLB, for expansin-like family A and B) remain to be established.