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Lymphocytes are a type of white blood cell that plays a key role in the immune system. They help the body defend against infections and diseases by producing antibodies, identifying and destroying harmful pathogens, and regulating immune responses.
Monocytes and lymphocytes are examples of agranulocytes. They do not contain visible granules in their cytoplasm, unlike granulocytes like neutrophils, eosinophils, and basophils.
The thymus gland promotes the development of T lymphocytes (T cells) in the immune system. T cells play a key role in recognizing and responding to specific pathogens and are critical for immune function.
Lymph nodes have a network of sinuses lined with macrophages that can engulf pathogens. Lymphocytes are found in the lymph node's cortex and paracortex, where they can recognize and respond to antigens present in the lymph. This organization allows lymphocytes and macrophages to work together to identify and eliminate pathogens effectively.
They are white blood cells called lymphocytes. There are two broad categories of lymphocytes, namely the large granular lymphocytes and the small lymphocytes, most small lymphocytes are T or B cells, and most granular lymphocytes are NK, or Natural Killer, cells.
Immature lymphocytes are formed in the bone marrow and then migrate to lymphoid tissues where they mature into T or B cells. In these tissues, they are exposed to antigens and undergo further development to become part of the immune response.