Fig. 3.

Transmission electron micrograph of an infected PAO1 colony. a A slice through a colony, with the filter visible at the bottom, and an empty zone at the top. We cannot be certain of the location of the slice within the colony. The dark black lines are an artefact due to sample preparation. The red box shows the location of panel b. The scalebar indicates 5 μm. b Phage are visible inside and around the cells. Note that cell debris from lysed cells is also visible in the bottom left corner. The red box shows the location of panel c. The scalebar indicates 1 μm. c Example of some cells containing assembled phage, and others that were free of phage. The scalebar indicates 400 nm. Cells containing phage had not lysed, suggesting delayed lysis, but not “pseudolysogeny”, where we would not expect assembled phage capsids