nine groups of wistar rats received 10 day 's icv infusion of nacl solutions containing either norepinephrine ( ne , 1.3 micrograms/min ) or a synthetic ne precursor , 1-threo-3,4-dihydroxyphenylserine ( 1-dops , 17 micrograms/min ) for 3 concentrations ( 0.15m , 0.8m or 1.5m ) of nacl .
C0028351
norepinephrine
C0000378
dops