Antigen Presenting cells

Q) Most potent cells that present antigen and are distributed throughout the lymphoid and nonlymphoid tissues of the body are??

a) Dendritic cells

b) Natural killer cells

c) Macrophages

d) Monocytes

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Ans a 

Dendritic cells are specialized macrophages that are regarded as professional APCs. They are the most potent cells that present antigen

NK cells ( part of innate immunity) are large granular lymphocytes with potent cytolytic function that constitute a critical component of innate immunity.

Sabiston 575

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