rats received an ip injection of saline , epinephrine hcl ( 5.0 micrograms/kg ) , or acth1 -- 24 ( 0.2 microgram/kg ) immediately after training in a step-down inhibitory avoidance task , and an ip injection of saline , or epinephrine ( 0.5 , 1.0 , 2.0 , 3.0 , 5.0 , or 10.0 mu/kg ) , or acth ( 0.02 , 0.04 0.08 , 0.12 , 0.2 , or 0.4 microgram/kg ) 6 min prior to a test session of the same task 24 hr after training .
C0001636
epinephrine hcl
C0014563
epinephrine