Which of the following is/are special cell(s) or the cellular barrier(s) of our innate immune system?

Neutrophils

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Macrophages

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Red blood cells

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Natural killer cells

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Solution

The correct option is D Natural killer cells
Innate immunity is the immunity which an individual is born with and is already present in the body. It is largely conferred by the white blood cells. The white blood cells are of different types. Few examples are: macrophages, neutrophils, basophils, natural killer cells and dendritic cells.

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