Effects of a Proprietary Standardized Orthosiphon stamineus Ethanolic Leaf Extract on Enhancing Memory in Sprague Dawley Rats Possibly via Blockade of Adenosine A 2A Receptors.
Evid Based Complement Alternat Med · 2015 · PMC4655036 · PMID 26649059
where RI was only almost significant ( p < 0.0539).
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