Lymph nodes are located at intervals along the lymphatic system.

Lymph nodes are particularly numerous in the mediastinum in the chest, neck, pelvis, axilla ( armpit ), inguinal ( groin ) region, and in association with the blood vessels of the intestines.

Lymph vessels called lacteals are present in the lining of the gastrointestinal tract, predominantly in the small intestine.

Lymph nodes are garrisons of B, T and other immune cells.

Lymph nodes act as filters or traps for foreign particles and are important in the proper functioning of the immune system.

Lymph nodes can also be diagnosed by biopsy whenever they are inflamed.

Lymph nodes are enlarged when the body is infected, primarily because there is an elevated rate of trafficking of lymphocytes into the node from the blood, exceeding the rate of outflow from the node, and secondarily as a result of the activation and proliferation of antigen-specific T and B cells ( clonal expansion ).

* Lymph nodes of the lungs: The lymph is drained from the lung tissue through subsegmental, segmental, lobar and interlobar lymph nodes to the hilar lymph nodes, which are located around the hilum ( the pedicle, which attaches the lung to the mediastinal structures, containing the pulmonary artery, the pulmonary veins, the main bronchus for each side, some vegetative nerves and the lymphatics ) of each lung.

Lymph may pick up bacteria and bring them to lymph nodes where they are destroyed.

Lymph node metastases are rare, and routine removal of lymph nodes is typically not necessary.

Villus lacteals ( Lymph capillary ) collect absorbed chylomicrons, which are lipoproteins composed of triglycerides, cholesterol and amphipathic proteins, and are taken to the rest of the body through the Lymph fluid.

Lymph vessels are lined by endothelial cells, and have a thin layer of smooth muscles, and adventitia that bind the lymph vessels to the surrounding tissue.

Lymph vessels are devoted to propulsion of the lymph from the lymph capillaries, which are mainly concerned with absorption of interstitial fluid from the tissues.

Lymph capillaries are slightly larger than their counterpart capillaries of the vascular system.

Lymph vessels that carry lymph to a lymph node are called the afferent lymph vessel, and one that carries it from a lymph node is called the efferent lymph vessel, from where the lymph may travel to another lymph node, may be returned to a vein, or may travel to a larger lymph duct.

On its way it passes through special nodular glands known as ' glands ' or Lymph nodes, which are concentrated in certain zones such as the back of the neck, the armpits and the groin.

Lymph nodes in a particular region are numerous and generally referred to in groups.

Lymph node biopsy is a test in which a lymph node or a piece of a lymph node is removed for examination under a microscope ( see: biopsy ).

Image: Lymph node with papillary thyroid carcinoma. jpg | Micrograph of thyroid cancer ( papillary thyroid carcinoma ) in a lymph node of the neck.

Lymph node s from ( a ) healthy and ( b ) infected sheep-colouring with antibodies shows clear sign of scrapie prions in the intracellular tissue of the infected sheep.

In 1981, after a long fight with Hodgkin's Disease-a cancer of the Lymph Glands-Tonge died aged only 35.

Lymph circulates to the lymph node via afferent lymphatic vessels and drains into the node just beneath the capsule in a space called the subcapsular sinus.

* Lymph vessel, a thin walled, valved structure that carries lymph

* Lymph node cytology-concerning lymph nodes

An alternate to this mnemonic is " NAVEL " for Nerve, Artery, Vein, Empty Space and Lymph, to include the deep inguinal lymph nodes located medial to the Femoral vein.

Lymph that enters the lymph vessels from the interstitial space usually does not flow backwards along the vessels because of the presence of valves.

Lymph is considered to be extracellular fluid until it enters the lymphatic vessels where it is then considered to be lymph.

" Lymph adenitis " or " lymph node adenitis " is caused by bacterial infection in lymph nodes.

simple: Lymph node

* Lymph node capsule

Lymph node involvement is accompanied by a high fever.

Lymph node surgery may also be performed after chemotherapy to remove masses left behind, particularly in the cases of advanced initial cancer or large nonseminomas.

Lymph node aspirate and chylus fluid may also yield microfilariae.

* Infectious disease: Lymph node enlargement may be due to a variety of infectious or autoimmune diseases.

* Lymph node, an anatomical feature involved in immunological function.

* Lymph node metastasis.

# REDIRECT Lymph node

Lymph node

Lymph is formed from the fluid that filters out of the blood circulation to nourish cells.

Lymph is essentially recycled blood plasma after it has been filtered from the blood cells and returned to the lymphatic system.

Lymph nodes may be swollen, and lymphedema may occur.

Lymph nodes affected by toxoplasma have characteristic changes, including poorly demarcated reactive germinal centers, clusters of monocytoid B cells and scattered epithelioid histiocytes.

Lymph nodes also have clinical significance.

The Lymph flows into the medullary sinuses from cortical sinuses, and into efferent lymphatic vessels.

Lymph is the fluid that circulates throughout the lymphatic system.

Lymph returns protein and excess interstitial fluid to the circulation.