these studies , utilizing isolated rat aortic strips and portal veins , compare the reactivities of these blood vessels to different prostaglandin compounds ( i.e. , pge1 , f2alpha , b1 and a1 ) under different environmental conditions ( e.g. , presence or absence of ca2+ , mg2+ , oxygen , substrate , and pg synthetase inhibitors with and without a variety of smooth muscle agonists ) in order to gain some insight into some mechanisms of pg action on blood vessels .
C0002335
pge1
C0033554
pg