in order to define the relative affinity of the alpha-2-agonists , clonidine , rilmenidine and guanfacine for the two classes of receptors , we performed competition studies of the alpha 2-antagonists 3h-rx 781094 ( imidazoline ) and 3h-rauwolscine ( non imidazoline ) binding to basolateral membranes from rabbit proximal tubule .
C0009014
clonidine
C1449836
imidazoline