How Our Immune System Clocks Into Work
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.”