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A carbon nanotubes (CNTs) based fluorescent aptasensor was developed for adenosine deaminase (ADA) activity detection and inhibitor screening by using adenosine (AD) as the substrate. This sensing system consists of CNTs, AD, split anti-AD aptamer fragment and dye-labeled aptamer fragment. In the absence of ADA, two aptamer fragments bind simultaneously with AD to form an AD-aptamer complex. This...
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