Fig. 3.

Roles of adenosine receptors and adenosine transporter. (a, b) Cells were treated with cordycepin and tumour necrosis factor (TNF)-α in the presence of 10 µM nitrobenzylthioinosine (NBTI), 5 µM MRS1523 (MRS) or 10 nM 1,3-dipropyl-8-sulphophenylxanthine (DPSPX) and subjected to phase-contrast microscopy (a) and assessment of cell death (b). (c) NRK/NF-κB-Luc cells were stimulated with indicated agents and subjected to luciferase assay.