What is a "lymphocyte"?

A lymphocyte is a type of white blood cell that plays a crucial role in the immune system. Lymphocytes are responsible for recognizing and targeting foreign substances in the body, such as viruses, bacteria, and other pathogens. Lymphocytes are found in lymphoid tissues, such as the lymph nodes, spleen, and bone marrow. They contribute to both the innate and adaptive immune responses, producing antibodies, coordinating immune cell activities, and providing long-term immunity against specific pathogens. Lymphocytes are essential for maintaining overall immune function and protecting the body from infections and diseases.