Assertion: amnion's cell | /r/CapableOf | secrete prostaglandin
Facets:
value: during the onset of labor
type: TEMPORAL
Source sentences:
text: Choriodecidual cells and infiltrated leukocytes secrete pro-inflammatory cytokines, prostaglandins and matrix metalloproteases during the onset of labor which may lead to spontaneous labor, the rupture of the membranes and eventually the delivery of the fetus