ELI5: Explain Like I'm 5

Trefoil domain

Hey there kiddo! So, you know how when you play with your lego blocks, you can put them together to make different things, like a house or a car? Well, scientists also like to play with shapes and patterns, but they use really, really tiny things called molecules.

One of these shapes that scientists have discovered is called a trefoil domain. It's a type of shape that looks like a three-leaf clover or a pretzel. It's made up of a special kind of molecule called a protein, and it's found in lots of different living things, like animals and plants.

Now, the cool thing about the trefoil domain is that it's not just for show - it actually has a job to do in the body. It helps to protect and heal different parts of the body, like the lining of your stomach or the surface of your skin. Think of it like a little shield that helps keep things safe and healthy.

So yeah, that's the basic idea of what a trefoil domain is! It's a special shape made of protein that helps protect and heal different parts of the body. Pretty neat, huh?