the spontaneous contraction rate of isolated perfused dog right atrial preparations , which included the sinoatrial node , was reduced by intrasinoatrial node artery infusions of adenosine analogues with a potency ratio of neca-100 : adenosine-15 : n6-cyclopentyladenosine-2.3 : r-pia-1 .
C0050789
neca
C0001443
adenosine