What Do Lymph Nodes Do?
Reviewed: Dr. Gromatzky
4. Lymphocytes
The lymphatic system is effective at keeping us safe largely due to the presence of lymphocytes. These are white blood cells that are often referred to as killer cells, because of the way they directly take on and kill pathogens. Lymphocytes include T-lymphocytes (T-cells), and B-lymphocytes (B-cells). In addition to killing pathogens, T-cells will help to keep track of immune cells.
If more or less of a certain type are needed, then T-cells will let the body know. B-cells work by producing antibodies that latch on to pathogens. This lets the body know which ones need to be killed off.
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