TABLE 2

Inhibition of [³H]DPCPX, [³H]ZM 241385, [³H]MRE 2029F20, and [³H]MRE 3008F20 binding by caffeine at A₁, A_2A, A_2B, and A₃ adenosine receptors expressed in human HT29 cells, respectively

Data are expressed as the mean ± S.E.M. K_i value represents the concentration of drug able to displace 50% of the radioligand.