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In characterizing the optimal condition for detection, it seems that only the sensitivity was considered. How about the specificity, as tradeoff is often seen for these two parameters? Also, what were the concentrations of target and H1 used as the fixing parameters? It would be more thorough if explanations are provided for the observed transitions and if these trends are consistent across the changing component concentrations. In the caption of the corresponding figure, it was mentioned ' the error bars represent the standard deviations for each concentration', could you clarify what do you indicate for each concentration?
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