The Role of White Blood Cells in the Immune System

The video explains how the immune system uses white blood cells to combat disease. It covers the roles of phagocytes, which ingest pathogens, and lymphocytes, which produce antibodies specific to pathogens. The video also discusses the concept of antigens and how memory cells enable a faster immune response upon re-exposure to the same pathogen. The immune system's ability to prevent illness by destroying pathogens before symptoms arise is highlighted.

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