in a more detailed study , chronic administration of clorgyline also caused changes in alpha-adrenergic receptor binding : by day 3 of treatment , significant changes were already observable in alpha-2-adrenergic receptor binding ( [ 3h ] clonidine ) , although changes in alpha-1 ( [ 3h ] wb4101 ) - and beta ( [ 3h ] dihydroalprenolol ) -cortical receptor binding were not present until day 10 .
C0034784
alpha-adrenergic receptor
C0001639
alpha-2-adrenergic receptor