Which of the following is responsible for initiating cell mediated immune responses and have long life span also?

T-Lymphocytes

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B-Lymphocytes

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Eosinophils

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Adipose cells

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Solution

The correct option is B T-Lymphocytes
The cell mediated immunity is controlled by the T-cells. T-lymphocytes initiate the cell mediated immune response by activating the naive antigen-specific B-cells. The T cells have got long life span. They are categorized as follows:
Cytotoxic T cells
Helper T cells
Supressor T cells
Memory T cells
Thus, the correct answer is option (A), 'T-Lymphocytes'.

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