Lymphoid

Lymphoid refers to the tissues and organs that produce, store, and carry white blood cells that fight infections and other diseases. This system includes the bone marrow, spleen, thymus, lymph nodes, and lymphatic vessels (a network of thin tubes that carry lymph and white blood cells). Lymphoid tissue is also found in other parts of the body such as the stomach, skin, and small intestine.

Structure

Lymphoid tissue is found throughout the body. It is particularly abundant in the lymph nodes, spleen, thymus, tonsils, adenoids, and Peyer's patches in the small intestine. Lymphoid tissue has a somewhat unique structure that provides a supportive framework for the lymphoid cells.

Function

The primary function of the lymphoid tissue is to host and facilitate interaction between the immune cells and antigens. It is here that the immune response is initiated. The lymphoid tissue also serves as a site for the proliferation of lymphocytes, a type of white blood cell, and their distribution throughout the body.

Clinical significance

Abnormalities in the lymphoid tissue can lead to various medical conditions. For instance, lymphoma is a type of cancer that starts in the lymphoid tissue. Autoimmune diseases can also occur when the immune system mistakenly attacks the body's own cells.

See also

• Lymphatic system
• Immune system
• White blood cells

References

Lymphoid Resources
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