Building a new model to explain NP diversity—the Screening Hypothesis

Building a new model to explain NP diversity—the Screening Hypothesis 

The widely used term biological activity is so vague that it is virtually meaningless. Even though the term biological activity is one that is widely used, and understood by most biologists or biochemists, it has no precise meaning without a reference point. As 

Remarkabiy, the ciear prediction that all NPs should show unambiguous evidence of some form of bioiogicai activity, at concentrations that the producing organisms could 

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