Cell bank

Imagine you have a lot of toys and you want to keep them safe and organized. You might put them in a special toy box or a playroom shelf. Your body has something kind of like a toy box for its cells. It's called a cell bank.

Your body is made up of billions of tiny building blocks called cells. Every type of cell in your body has a special job, like making your muscles move or helping you see things. But sometimes, a part of your body gets hurt or gets sick, and some of your cells might not work properly anymore.

That's where the cell bank comes in. It's like a storage place for good, healthy cells that are ready to replace any damaged or sick cells. These healthy cells come from different parts of your body, like your skin or blood. Scientists take these cells and make copies of them in the lab, so they'll have enough to use if they need to replace any damaged cells later on. It's kind of like making lots of extra toy cars or dolls, just in case you lose or break a few.

Sometimes, doctors also use cell banks to store healthy cells from other people, in case someone needs a transplant. For example, if someone has leukemia (a type of blood cancer), their body might not be able to make enough healthy blood cells. But if they get healthy blood stem cells from another person, those cells can help make new healthy blood cells and hopefully cure the cancer.

So, a cell bank is like a special place where scientists keep healthy cells, kind of like a toy box for your body. The cells can be used later on to replace any damaged or sick cells, or even given to other people to help them get better.