Assertion: placenta | /r/CapableOf | try to prevent harmful substances
Facets:
value: from making this journey
type: TRANSITIVE-OBJECT
Source sentences:
text: The placenta as a filter One of the functions of the placenta is to act as a filter — allowing beneficial substances such as oxygen and nutrients to pass from the maternal circulation into the fetal circulation, but also trying to prevent harmful substances from making this journey.