Assertion: prostaglandin | /r/CapableOf | act upon mast
Facets:
Source sentences:
text: They are autocrine and paracrine lipid mediators that act upon platelets, endothelium, uterine and mast cells.
text: Prostaglandins are autocrine and paracrine lipid mediators that act upon platelets, endothelium, uterine and mast cells.