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Inhibition of binding of [3H]XAC to human striatal adenosine receptors by CPX. The biphasic curve represents binding of CPX to high affinity (A1) and low affinity (A2) sites. The binding was carried out at 24°C for 90 min. [3H]XAC was present at a concentration of 1.0 nM in 0.05 M Tris HCI buffer at pH 7.4.
