Fig. 1.

Phage-Protease-Peptide Multiplex Detection Scheme. (a) Phage specific to a bacterial target, is bioengineered to carry a gene for a specific protease. Protease acts on a specific peptide resulting in a unique fluorescent signal or peptide product. (b) Phage and corresponding peptides are added to a single sample. Signal is produced only if corresponding bacterial target is present in sample to produce the protease.