The human body is made up of a lot of cells. Sometimes, some of these cells go mad and people get sick and might die.
We are a team of doctors and world top people who work in the hospital. We want to do something new to help people get better quicker and more easily, so they can live a longer and happy life.
To do this, we have a deeper look at blood and try the new things out first on cells and then on humans. Another group of women and men make some kind of light that can be followed within the human body to track these mad cells. This light can be seen by the doctors and then used to help make people feel better.
Also, we consider new ways to find out how sick a person is and what works best for them. We want to find out how much better these new ways are than the old ones, how much less or more money they need, and how people think and feel about them. We hope that we will be able to help lots of people.