The cell-mediated immunity inside the human body is carried out by B lymphocytes, T lymphocytes, Thromobocytes, Erythrocytes?

Cell-mediated immunity is an immune response that does not involve antibodies, but rather involves the activation of phagocytes, antigen-specific T lymphocytes and the release of various cytokines in response to an antigen. Thus, the correct answer is option (A), 'T lymphocytes'.