FIG 2.
Bistable expression of motility and biofilm genes. Fluorescence microscopy of cells harboring both Phag-cfp and either PtapA-yfp fusion in a wild-type strain of B. subtilis. Cells were observed using fluorescence microscopy. Phag-CFP was false, colored in blue, and PtapA-YFP in yellow. (Reproduced from reference 108).