An organ is a group of tissues all working together to do a specific task. Organs come in many shapes and sizes, and are specialised for all sorts of purposes. Eyes take light and turn it into information which is sent to the brain, telling you what you can see around you. The heart is made from strong muscle which pumps blood to all the other organs in your body. Kidneys are organs for cleaning the blood, lungs for breathing, and stomachs for digesting food.
The five scientists in the Organ Zone look at different organs and ways to treat disease. One studies what can cause cancer by looking at mini-organs produced in the lab, one investigates how to treat heart disease by looking at a virtual model of the heart in her computer, and one researches kidneys to see how she can help people with kidney disease. One studies how skin cells communicate with the immune system when they’ve been infected by a virus, and another investigates how nerve cells are connected to each other in the brain.