For ease of application, the team designed this assay as a simple paper-based sensor by anchoring the gel matrix onto a paper disk. When β-glucuronidase pre-treated with modified 2,3-DHN is added, the ...

Luminescent paper discs under UV lamp: (1) without enzyme; (2), (3) and (4) with β-glucuronidase enzyme. In the presence of the enzyme, the discs show strong green luminescence. Researchers at the ...