Assertion: cell wall's structure | /r/HasProperty | important
Facets:
value: often
type: DEGREE
value: for the virulence of pathogens
type: PURPOSE
Source sentences:
text: The bacteria cell wall is an important structure which is rigid and non living envelop around the cell.
text: Many types of secretion systems are known and these structures are often essential for the virulence of pathogens, so are intensively studied.
text: The cell wall is an important structure found in plants, bacteria, algae and fungi, but is missing in animals.