to study age differences in basal ne and epi metabolism we infused eight young ( aged 19-26 yr ) and eight old ( aged 64-74 yr ) normal subjects with [ 3h ] ne or [ 3h ] epi ( 15 microci/m2 bolus dose plus 0.35 microci/m2/min for 50 min ) to achieve steady state conditions on separate days .
C0028351
ne
C0014563
epi