Interleukin-2 (IL-2) immunotherapy is like superhero medicine that helps our body fight bad guys (like cancer) that we can't fight with just our own body parts.
Our body has special cells called T-cells that help fight bad guys, but sometimes they need a little extra help. That's where IL-2 comes in. It's a special ingredient that helps make the T-cells stronger and better at fighting bad guys.
Doctors give IL-2 through an IV in your arm, and it travels all over your body to find those T-cells and give them superpowers. The T-cells then go out and look for bad guys to fight, like cancer.
It's kind of like giving the T-cells a superhero costume and making them stronger and faster, so they can fight the bad guys better.
But just like with any superhero movie, there can be some side effects. Some people might get a fever, feel tired or have a headache. But just like with any superhero, it's always worth it to fight the bad guys and save the day.