<div>On the flipside, there is no guarantee that the compounds discovered will have biological activity. Of course, this is unlikely seeing as they are endogenous secondary metabolites, and the extraction process tries to select for compounds with certain characteristics. But it is still possible and can be frustrating. It is also important to consider the choice of bioassays. Just because they aren’t active in the bioassays you conduct, does not mean someone will not find a use for them later on. 
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