Changes in range and maximal gain (Gmax) of baroreflex response functions for RSNA and pre-ASNA evoked by bilateral microinjections into the NTS of A2a adenosine receptor agonist (CGS-21680, 2.0 and 20 pmol in 50 nl), selective A2a adenosine receptors antagonist (ZM-241385, 40 pmol in 100 nl), nonselective A1 + A2a adenosine receptors antagonist (8-SPT, 1 nmol in 100 nl), and respective volume controls (ACF, 50 and 100 nl for the agonist and the antagonists, respectively). *P < 0.05 vs. ACF. †P < 0.05 vs. CGS 2.0 pmol. #P < 0.05 vs. RSNA.