A subclass of adenosine A2 receptors found in the CECUM, the COLON, the BLADDER, and a variety of other tissues. It is generally considered to be a low affinity receptor for ADENOSINE that couples to the GS, STIMULATORY G-PROTEIN.

Synonyms: 0, Receptors, Adenosine A2B, A2B Receptor, Adenosine, Adenosine A2B Receptor, Adenosine A(2B) Receptor, Adenosine A2B Receptors, A2B Receptors, Adenosine, Receptor, Adenosine A2B