Which type of immune response is mediated by T-cells?

The immune response mediated by T-cells is known as the cell-mediated response. This type of immune response involves the activation and proliferation of T-cells, which play a crucial role in recognizing and responding to infected cells, tumor cells, and pathogens. T-cells can directly kill infected cells or help activate other immune cells, such as B-cells and macrophages, to further the immune response.

This response is particularly effective against intracellular pathogens, such as viruses, and forms an important part of the adaptive immune system. The cell-mediated response is distinct from the humoral response, which is primarily conducted through B-cells and the production of antibodies. The innate immune response, on the other hand, is a general, non-specific defense mechanism that operates independently of T-cells. Lastly, passive responses refer to the acquisition of antibodies from another source, rather than an active immune response generated by the individual's own immune system.