polyploidy formation of vascular smooth muscle cells was observed in vivo by intravenous infusion of norepinephrine or epinephrine in wistar-crea rats for 12 days at the rate of 0.02 mumol/hr with an osmotic minipump and in vitro by exposing cultured vascular smooth muscle cells obtained from normotensive wistar-kyoto rats ( wky ) and spontaneously hypertensive rats ( shr ) to norepinephrine ( 10 ( -7 ) m to 10 ( -5 ) m ) in the cultured medium .
C0014563
epinephrine
C0028351
norepinephrine