where are t cells produce
T-cells, also called thymus cells or thymocytes, are a type of white blood cell called lymphocytes. They help fight against disease and infection. T-cells cells play a vital role in cell-mediated immunity. Once activated, T-cells secrete chemical messengers called cytokines, which stimulate immune system cells to engulf foreign substances (such as bacteria, viruses, fungi, and allergens) that enter the body. T-cells are continually produced in the bone marrow.