the adenosine analogues 5'- ( n-ethyl ) carboxamidoadenosine ( neca ) and n6- ( phenylisopropyl ) adenosine ( pia ) activate glycogen phosphorylase 5-fold and 4.2-fold respectively in rat hepatocytes incubated in the absence of endogenous adenosine .
C0050789
neca
C0001443
adenosine