A button grass (Dactyloctenium radulans) particle after being ingested by an Australian Plague locust (Chortoicetes terminifera). This is a combined image of a particle imaged with transmitted light and blue light (a lighten filter in Photoshop was applied). Bundle sheath cells of button grass blades were loaded with the cell vitality dye carboxy fluorescein prior to feeding to a locust. Bright yellow/green cells contain the carboxy fluorescein dye and indicate which cells are alive. A relatively small proportion of cells have retained their membrane integrity as indicated by the presence of the dye and thus deemed alive. Image by William Armour.