Which type of lymphocyte is responsible for activating T-cell and B-cell production?

The responsible lymphocyte for activating T-cell and B-cell production is the Helper T-cell. These cells play a crucial role in the adaptive immune response by recognizing foreign antigens presented by antigen-presenting cells. Once activated, Helper T-cells release cytokines, which are signaling molecules that stimulate other immune cells, particularly B-cells and cytotoxic T-cells.

Helper T-cells support the differentiation of B-cells into plasma cells, which produce antibodies specific to the antigens. Additionally, they enhance the activity of cytotoxic T-cells, which are essential for killing infected or cancerous cells. Therefore, Helper T-cells are pivotal for forming a robust immune response by coordinating and amplifying the activity of B-cells and other T-cells.

Memory T-cells, natural killer cells, and cytotoxic T-cells all have specific functions in the immune system, but they do not primarily serve the role of activating the production of B-cells and T-cells in response to pathogens.