in both humans and rat , a number of resistance vessel characteristics differ between those from hypertensive individuals and those from normotensive controls , including vascular structure ( expressed as media : lumen ratio in rat vessels and media cross-sectional area in human vessels ) and the sensitivity of the norepinephrine concentration-response curve to cocaine ( expressed as a `` '' cocaine shift , '' '' and possibly being a marker for amount of sympathetic innervation ) .
C0005847
vessels
C0162867
media