A green and blue bacteriophage on the surface of a red bacterium with two other bacteria in the background. The bacteriophage is in the initial stage of infection has two “legs” in the main bacterium. An arrow connects the bacteriophage with the text “Upcoming superhero?”
Image shows a train station. Cells stand on the platforms. The closest cell (red with a blue circle around it) has a watch on its hand. Further away is a pink and orange cell. In the background, two cells can be seen descending a staircase. Other cells are also present in the background. A red and white train approaches the front of the image. Underneath is the white text stating “How our immune system clocks into work.”