What is the role of antigen-presenting cells (APCs) in the immune response?

What is the role of antigen-presenting cells (APCs) in the immune response?

Step 1: Understand that the immune system protects the body from infections and diseases.
Step 2: Know that antigens are substances that can trigger an immune response, like parts of bacteria or viruses.
Step 3: Learn that antigen-presenting cells (APCs) are special cells in the immune system.
Step 4: Realize that APCs capture and process antigens from pathogens.
Step 5: Understand that after processing, APCs display these antigens on their surface.
Step 6: Know that T cells, a type of immune cell, recognize these displayed antigens.
Step 7: Learn that when T cells recognize the antigens, they become activated.
Step 8: Understand that this activation starts the adaptive immune response, which helps the body fight off infections.

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