What are T Cells?
T cells control the immunological response mediated by cells, making up around 75% of the circulating lymphocytes. They originate from bone marrow hemocytoblasts, and when they move to the thymus, they are referred to as T-cells. These immature cells, known as thymocytes in the thymus, develop into T lymphocytes. Thymosin, a local polypeptide hormone, encourages this maturation process.
After being stimulated by antigens , the T cell divides rapidly and forms a clone of cells known as lymphoblasts. These clones are morphologically similar and can react specifically with the same antigen but perform different functions. Four different T-lymphocyte subtypes are present in the clone: Helper T-cells, Suppressor T-cells, Memory T-cells and Killer T-cells.
T Cells Functions
Some of the functions performed by T cells are discussed below:
- Directly attack and kill infected or abnormal cells.
- Regulate immune responses by activating other immune cells or suppressing excessive reactions.
- Provide long-term immunity through memory T cells, which respond rapidly to reinfection.
- Coordinate immune responses by releasing signaling molecules called cytokines.
- Help in the elimination of pathogens and infected cells through immune surveillance and activation of other immune cells.
Difference Between T Cells And B Cells
The difference between T cells and B cells is that the lymphocytes that remain in the bone marrow for differentiation are known as “B-cells,”. In contrast, the lymphocytes that migrate to the thymus are “T-cells.” Their mode of action against fighting pathogens is different. For example- when any pathogen enters the body, T cells recognize it, stimulate different T cells and start making clones. This is how they increase their number and fight against pathogens.
However, the B cells, are first activated by T cells, and they also start multiplying and creating copies of memory B cells and plasma cells that migrate to the infection site (lymph). If the same virus or bacterium re-infects a person, memory B cells can promptly eliminate the antigens.
Difference Between B and T Cells
Table of Content
- What are B Cells?
- What are T Cells?
- Difference Between B-Cells and T-Cells
- Similarities Between B cells and T cells
- Conclusion: Difference Between T Cells And B Cells
- Difference Between Related Links
- FAQs on Difference Between T Cells and B Cells