ICI-118551 is a highly selective β2-adrenergic receptor antagonist with Ki values of 0.7, 49.5 and 611 nM for β2, β1 and β3 receptors, respectively.

BQ-3020 (TFA) is a selective ETB receptor agonist that inhibits [125I] et-1 binding to the ETB receptor in the cerebellum with a 0.2nm IC50, causing vasoconstriction.

HEX3 is a fragment of the adenoviral hexon. Hexon is the major capsid protein of adenovirion and is comprised of three identical polypeptide chains.