Fig. 6
From: The development progress of multi-array colourimetric sensors based on the M13 bacteriophage
(a–g Reproduced from Ref. [95]. Copyright 2017, The Royal Society of Chemistry)
M13 bacteriophage based photonic nose for differential cell recognition. a Specific odorants produced by cell breathe. b Swelling of M13 bacteriophage bundle responding to vapor phase chemicals resulting in scattering colour change. c colour fingerprints from the M13 bacteriophage-based photonic nose on exposure to different carbon dioxide concentrations. d Real-time RGB intensity profile for E. coli incubated with the photonic nose. e RGB intensity change from both E. coli and NCI-H1299 cells as a function of different cell populations. f RGB colour patterns after exposure to the respiration of different cell types. g LDA plot of the colour changes resulting from exposure to HEK-293, NCI-H1299, SKHep-1, HeLa and HCT116 cells