Assertion: prostaglandin | /r/AtLocation | the walls of blood vessels
Facets:
Source sentences:
text: is thatis (biochemistry) any of a group of naturally occurring lipids derived from the cacid prostanoic acid; they have a number of physiological functions and may be considered to be hormones whileis (organic compound) a prostaglandin produced in the walls of blood vessels; it acts as a vasodilator and inhibits the aggregation of platelets.
text: A prostaglandin produced in the walls of blood vessels; it acts as a vasodilator and inhibits the aggregation of platelets )