attempts to extract a prostaglandin in the bathing medium were unsuccessful.6 the involvement of a purine nucleotide appeared unlikely since the ear artery dilated only in response to fairly high concentrations of adenosine 5'-triphosphate ( atp ) , adenosine 5'-diphosphate ( adp ) and adenosine 5'-monophosphate ( amp ) .
C0001480
adenosine
C0001413
adenosine