Assertion: membrane's environment | /r/HasProperty | outside
Facets:
Source sentences:
text: The cell membrane, being exposed to the outside environment, is an important site of cell–cell communication.
text: The cell membrane is a complex barrier separating every cell from its external environment.
text: The cell membrane, being exposed to the outside environment, is an important site of cell-cell communication.
text: Plasma membrane is the outermost covering of the cell that separates the contents of the cell from its external environment.