The cells that Metchnikoff first observed are associated with which phenomenon?

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Study for the Stevens Immunology-Serology Test. Explore flashcards and multiple choice questions with detailed explanations and hints. Get exam ready now!

Multiple Choice

The cells that Metchnikoff first observed are associated with which phenomenon?

Explanation:
Phagocytosis by early phagocytic cells is the hallmark of innate immunity. Metchnikoff observed cells that could actively engulf and digest foreign material, demonstrating a rapid, non-specific defense that doesn't require prior exposure or antibodies. This cellular defense is the essence of innate immunity, contrasting with adaptive or specific humoral immunity, which relies on lymphocytes and antibodies and develops over time after exposure.

Phagocytosis by early phagocytic cells is the hallmark of innate immunity. Metchnikoff observed cells that could actively engulf and digest foreign material, demonstrating a rapid, non-specific defense that doesn't require prior exposure or antibodies. This cellular defense is the essence of innate immunity, contrasting with adaptive or specific humoral immunity, which relies on lymphocytes and antibodies and develops over time after exposure.

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