What Are White Blood Cells?
Reviewed: Dr. Gromatzky
5. Lymphocytes
B lymphocytes play an important role in our immune system because they help the system to remember specific threats. This allows a quick response against such threats should they return in the future. They are responsible for producing the antibodies that help attack intruders and are a key component in many modern vaccines.
T lymphocytes also play a very important role in tackling unwelcome intruders. They are often referred to as killer cells because of the way they kill pathogens directly. Both are found in lymph, which is the fluid found circulating in the lymphatic system; a key component of our immune system.
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