Thymosin and thymopoietin assist in the maturation of: alpha cells. T lymphocytes. B lymphocytes. chief cells.

Thymosin and thymopoietin are hormones produced by the **thymus gland** and play crucial roles in the development and maturation of components of the immune system. - **Thymosin** specifically promotes the differentiation and maturation of **T lymphocytes (T cells)**, which are essential for adaptive immunity. These hormones help T cells develop the ability to recognize and respond to specific antigens, thereby orchestrating the body's immune response. - **Thymopoietin** also supports the maturation of T cells and plays a role in the development of the thymic microenvironment, which is critical for effective T cell education and function. Given the options provided: - **Alpha cells**: Located in the pancreas, involved in glucagon secretion. - **T lymphocytes**: Immune cells involved in cell-mediated immunity. - **B lymphocytes**: Immune cells responsible for antibody production. - **Chief cells**: Found in the stomach, responsible for secreting pepsinogen. **Correct Answer:** **T lymphocytes.**