See my post: "Under those lab in-vivo research test conditions..." Wait, did you even read the poster? Go back and diligently read the poster. Then read my post. I think there are a lot of folks here who could take the time to scrutinize the poster and have the intelligence to understand what it is showing and what it means (and doesn't mean) including you. Will be a whole lot more helpful for you.
For those not inclined to do the legwork like a careful investor, the answer is: the other agonists used in the research.