<p>Competition experiments of [<sup>3</sup>H]ZM-241385 (2 nM) <i>versus</i> increasing concentrations of KW-6002 (a and c) or SCH-442416 (b and d) were performed as indicated in Methods in membrane preparations from CHO cells expressing A<sub>1</sub>R and A<sub>2A</sub>R (a and b) or A<sub>2A</sub>R and D<sub>2</sub>R (c and d). Data are means ± S.E.M. of a representative experiment performed with triplicates.</p
