- Jun 23, 2008
I have had 2 cornea transplants in my right eye and various other procedures over the last ...

T cells are a type of white blood cells (lymphocytes). They make up part of the immune system. T cells help the body fight diseases or harmful substances.
A test can be done to measure the number of T cells in your blood.
Thymus derived lymphocyte count; T-lymphocyte count