chronically catheterized fetal lambs ( n = 11 , gestational age 111-139 days ) and neonatal lambs ( n = 20 , postnatal age 4-30 days ) were studied to explore during development the relationship of renal hemodynamic responses during hypoxemia to plasma epinephrine concentration ( e ) , plasma norepinephrine concentration ( ne ) , plasma arginine vasopressin concentration ( avp ) , and plasma renin activity ( pra ) .
C0014563
epinephrine
C0028351
norepinephrine