using male wistar rats , uptake of fitc-bsa under steady state conditions in the ascending aorta and aortic arch ( 14 +/- 2 micrograms/mg aorta ) is significantly higher ( p less than 0.05 ) than that of either the upper , middle , or lower third of the thoracic aorta ( 10 +/- 1 mu , 9 +/- 1 mu , and 8 +/- 1 micrograms/mg , respectively ) .
C0003956
ascending aorta
C0003483
aorta