What is the primary function of T lymphocytes in the immune response?

The primary function of T lymphocytes, also known as T cells, is to recognize and destroy abnormal cells, including those that are infected by viruses or have undergone transformation into cancerous cells. T cells play a critical role in the immune response by identifying these cells through specific receptors on their surface that can bind to antigens presented by other cells.

Once a T cell recognizes an infected or abnormal cell, it can directly kill that cell, which is essential for controlling infections and preventing the spread of diseases. Additionally, T cells also help regulate and orchestrate the overall immune response. They are divided into various subtypes, such as cytotoxic T cells, which are responsible for the direct killing of infected or cancerous cells, and helper T cells, which assist in activating other components of the immune system, including B lymphocytes.

Other options reference functions that, while important in the immune response, are not the primary role of T lymphocytes. For instance, the production of antibodies is primarily the role of B lymphocytes. Additionally, activating B lymphocytes or producing red blood cells are functions that do not fall under the primary responsibilities of T cells. Thus, the recognition and destruction of abnormal cells truly encapsulate the essential function of T lymphocytes in