Illumina is a company that makes something called a DNA sequencer, which is like a very special camera that can take pictures of something called DNA.
DNA is like a set of instructions that tells your body how to grow and work properly. Every living thing has DNA, like animals, plants, and even tiny bacteria.
Imagine if you could read those instructions in the DNA like a book, by looking at every single letter or word. That is what a DNA sequencer does. It can read all the letters in the DNA book and tell us what it says.
Why is this important? Well, sometimes there are mistakes in the DNA instructions that can cause diseases like cancer or cystic fibrosis. People can also have differences in their DNA that make them unique, which is why you might look different from your friends or family. DNA sequencing can help doctors and scientists understand these differences and come up with new ways to treat diseases and help people.
So Illumina is a company that makes these DNA sequencers so that scientists and doctors can look at DNA and learn more about how it works.