IMMUNOLOGY

Detailed explanation-1: -T cells play a central role in cell-mediated immune response through the use of the surface T cell receptor to recognize peptide antigens. Cell-mediated immunity involves cytotoxic T cells recognizing infected cells and bringing about their destruction.

Detailed explanation-2: -Cellular immunity is a protective immune process that involves the activation of phagocytes, antigen-sensitized cytotoxic T cells and the release of cytokines and chemokines in response to antigen.

Detailed explanation-3: -B cells activate humoral immunity, whereas T cells activate cell-mediated immunity.

Detailed explanation-4: -Helper T-cells are a type of immune cell. When they sense an infection, they activate other immune cells to fight it. They may activate cytotoxic T-cells or they may activate B-cells, which produce antibodies. Your helper T-cells are one the most important types of cells involved in your adaptive immune response.