ELI5: Explain Like I'm 5

Co-stimulation

Co-stimulation is like when you are playing with your friends and you need someone else to help you have more fun. Your body's cells, like your friends, need help from other cells to do their job better.

Co-stimulation happens when one cell sends a message to another cell so that it can become stronger and more effective in doing its job. It's like a high-five between cells!

When your body is fighting off germs or trying to heal from an injury, co-stimulation allows your immune system cells to work together and become stronger, so they can do their job better and faster. It's like your immune system getting a team pep talk to help it fight off the bad guys!

Scientists use co-stimulation to create medicine that can help your body fight off disease and recover from injuries faster. They help your body's cells work together like friends to protect your body from harm.