A macrophage (pale brown) interacts with Borrelia cells (blue), the spirochete bacteria that cause Lyme disease. Although the outer membrane of Borrelia contains a strong antigen, the OspC protein, the bacterium successfully evades the human immune system by hiding out in places less accessible to immune cells, such as the central nervous system.
Sometimes evolution has terrifying fever dreams where everything is beautiful but nothing makes any sense. Shapes and colors appear and disappear and rearrange themselves like mad ghosts, and nothing ends up quite where it’s supposed to be. What do these dreams mean? Evolution doesn’t know. But when it wakes up in the morning, it makes some really weird-ass birds.