Research Article
Effects of a Proprietary Standardized Orthosiphon stamineus Ethanolic Leaf Extract on Enhancing Memory in Sprague Dawley Rats Possibly via Blockade of Adenosine A2A Receptors
Figure 3
Response curve for adenosine A1 antagonist assay. The IC50 of adenosine A1 antagonist assay for O. stamineus ethanolic extract is 95.1 μg/mL.