Immune Cells

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What is phagocytosis?

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Phagocytosis is the process by which certain cells, such as white blood cells, surround, engulf, and digest pathogens or foreign particles.

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What are antibodies?

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Antibodies are proteins produced by the immune system to identify and neutralize pathogens like bacteria and viruses.

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What is the role of T lymphocytes in the immune system?

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T lymphocytes help coordinate the immune response and can directly attack infected cells and tumors.

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What type of blood cell is responsible for producing antibodies?

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B lymphocytes are responsible for producing antibodies.

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What is the function of neutrophils?

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Neutrophils are a type of white blood cell that responds quickly to infection and are the first line of defense against pathogens.

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What are antigens?

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Antigens are substances that trigger an immune response, often found on the surface of pathogens.

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How do vaccines work?

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Vaccines stimulate the immune system to recognize and fight specific pathogens without causing the disease.

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What is the difference between active and passive immunity?

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Active immunity is developed through exposure to pathogens or vaccination, while passive immunity is acquired through antibodies from another source, such as maternal antibodies.

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What is the role of macrophages in the immune system?

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Macrophages are large white blood cells that engulf and digest pathogens and dead cells, playing a crucial role in the immune response.

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What is the immune response?

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The immune response is the body's defense mechanism against foreign invaders, involving various cells and proteins to identify and eliminate pathogens.