Cover Feature: A Syringe‐Based DNAzyme Sensor for Bacterial Detection (2/2021)

The Cover Feature shows how a simple sensor comprising a syringe and a column containing agarose beads immobilized with an RNA‐cleaving DNAzyme specific for a bacterium of interest is set up to achieve bacterial detection by filtration. The DNAzyme is fluorescently labelled so that the bacterium‐induced cleavage event produces a fluorescent cleavage product that can be pushed out with the syringe onto a nitrocellulose paper sensor, which can then be detected using a handheld fluorescence device. More information can be found in the Communication by C. D. M. Filipe, Y. Li, and co‐workers.