Did You Know?

Your body has many ways to fight germs!

What Are Antigens?

Antigens are tiny parts that can make us sick.

How Do They Work?

They tell our body to fight germs.

What Antigens Do

They help our body know bad stuff.

They can make us feel sick.

They help our body stay strong.

They can come from germs or food.

Our body makes a plan to fight.

They help keep us safe and well.

More About Antigens

Antigens are found in many things. They can be in germs, food, or even dust. When they get in our body, they can make us feel bad. Our body has a way to fight them off.

Every day, we meet many antigens. Some are not bad and help us grow strong. Others can make us sick, so our body must act fast.

In the future, we will learn more about antigens. This can help us make new ways to stay healthy. We can find ways to beat the bad ones and keep our bodies safe.

How Topics Connect

graph TD A["Antigen (Ag)"] --> B["Molecule or Portion"] B --> C["Binds to Antibody"] B --> D["Binds to T-cell Receptor"] A --> E["Triggers Immune Response"] E --> F["Activation of Immune Cells"]

What Do These Words Mean?

immunology:the study of the immune system and how it works
antigen:a substance that can cause the body to make an immune response
antibody:a protein made by the immune system to fight off germs
T-cell receptor:a molecule on T-cells that helps them recognize antigens
immune response:the body's reaction to fight off infections or foreign substances