to identify and characterize fully the adenosine receptor of human placenta , particulate preparations of placental parenchyma were examined using several adenosine receptor ligands , [ 3h ] 2-chloradenosine ( [ 3h ] 2-cl-ado ) , [ 3h ] n6-ethylcarboxamideadenosine ( [ 3h ] neca ) , and [ 3h ] n6- ( l-phenylisopropyl ) -adenosine ( [ 3h ] pia ) .
C0050789
neca
C0001443
adenosine