“The protein kinase‐A inhibitors, N‐(2‐guanidinoethyl)‐5‐isoquinolinesulfonamide (HA‐1004, 10 μM) and adenosine 3′,5′‐cyclic monophosphorothioate, Rp‐isomer (Rp‐cAMPS, … (10 nM), suggesting that this effect of CGRP involves both KATP channels and protein kinase‐A. It is concluded that the ability of CGRP … adenosine, ….”