the purified receptor also showed essentially the same specificity for adenosine agonists and antagonists as the unpurified receptor preparations , although the affinities of the purified adenosine receptor for agonists were significantly low compared to those of unpurified receptor preparations indicating that the purified a1 adenosine receptor exists as a low agonist-high antagonist affinity state .
C0597357
preparations
C0001471
adenosine receptor