as opposed to clonidine , ld 3098 , a potent vascular postsynaptic alpha-adrenoceptor stimulating imidazoline , and phenylephrine ( 20.0 microgram/kg , i.v . ) did not significantly alter the sympathetic tachycardia in the pithed rat and the spinal dog .
C0009014
clonidine
C1449836
imidazoline