T lymphocytes
– eradicate pathogens, – clear infected self-cells- aid other cells in inducing immunity
T lymphocytes, also known as T cells, are a type of white blood cell that play a critical role in the immune system’s defense against pathogens and foreign substances. There are several types of T cells, each with a unique function and mechanism of activation.
The most common type of T cell is the helper T cell, which plays a central role in coordinating immune responses by activating other immune cells, such as B cells and cytotoxic T cells. Helper T cells are activated when they encounter an antigen presented by an antigen-presenting cell (APC), such as a dendritic cell. Once activated, helper T cells release cytokines that stimulate the immune response and help to direct it towards the pathogen.
Cytotoxic T cells, also known as killer T cells, are another type of T cell that plays an important role in killing infected or cancerous cells. These cells are activated when they encounter a virus-infected or abnormal cell and release cytotoxic molecules that cause the targeted cell to undergo apoptosis.
Lastly, there are regulatory T cells, which play a critical role in preventing the immune system from attacking healthy tissues. These cells help to maintain immune tolerance and prevent autoimmunity.
Overall, T lymphocytes play a crucial role in the immune system’s ability to defend against pathogens and prevent disease.
More Answers:
The Role of T-Cell Receptors (TCRs) in Recognizing Antigens and Activating Immune Responses.Decoding the Crucial Role of Gene Segment Rearrangements in Immune Development
Understanding the Essential Components of the Immune System: Humoral and Cell-mediated Immunity