Assertion: placenta | /r/CapableOf | act as barrier
Facets:
value: to most bacteria
type: TRANSITIVE-OBJECT
value: between the mother
type: LOCATION
value: between the fetus
type: LOCATION
Source sentences:
text: It can act as a barrier between the mother and the fetus, preventing some harmful substances in the blood of the mother from damaging the fetus.
text: Although the placenta acts as a barrier to most bacteria, some viruses and small bacteria can cross it.