Final answer:
The immune system consists of different types of cells with specific functions. T cells play a key role in cell-mediated immune response, while B cells produce antibodies. Natural Killer cells are non-specific immune cells that attack various types of pathogens and tumors.
Step-by-step explanation:
T cells are a key component in the cell-mediated immune response, which utilizes T cells to neutralize cells infected with viruses and certain bacteria. Cytotoxic T cells destroy virus-infected cells, while helper T cells activate both the antibody and cell-mediated immune responses. Suppressor T cells deactivate T cells and B cells when needed, preventing an excessive immune response.
B cells produce antibodies, which bind specifically to antigens on pathogens. They mature in red bone marrow and differentiate into plasma cells that secrete antibodies to target antigens. Natural Killer cells are non-specific immune cells that attack a variety of infectious microbes and certain tumor cells.