What is MRNA?

mRNA is like a special message that tells your body how to build something new.

Imagine you have a toy factory. When you want to make a new toy, you send a note to the workers telling them exactly what to build. mRNA is kind of like that note, it tells your cells how to make a protein, which is like a toy or tool they need to do their job.

Your body has instructions for making all kinds of proteins, stored in something called DNA. Think of DNA like the boss of the factory who writes down all the blueprints. When your body needs a new protein, it sends a copy of that blueprint, the mRNA, to the workers (called ribosomes) so they can build the toy.

Sometimes, your body needs extra help, like when you're fighting off a sickness. Scientists can use mRNA to teach your cells how to make something special, like a protein that helps fight germs. That’s why people get mRNA vaccines, it's like giving your body a note saying, “Here’s how to build a tool to beat the germ!”