lymphoid organs

There is also poor development of the secondary lymphoid organs.

They then populate the lymphoid organs for storage until needed.

Haemal nodes are lymphoid organs found in various mammals and some birds.

The peripheral lymphoid organs are the sites of lymphocyte activation by antigen.

Lymphoid organs are anatomical structures common to penaeid shrimp.

The central or primary lymphoid organs generate lymphocytes from immature progenitor cells.

In the jawless fish (lampreys and hagfish), true lymphoid organs are absent.

These are the two primary lymphoid organs where T cells and B cells mature.

Mature lymphocytes recirculate between the blood and the peripheral lymphoid organs until they encounter their specific antigen.

Histologic analysis indicates that peripheral lymphoid organs, particularly lymph nodes, lack the proper number of cells.

Secondary or peripheral lymphoid organs maintain mature naive lymphocytes and initiate an adaptive immune response.

Lymph nodes together with the spleen and Peyer's plates belong to secondary lymphoid organs.

LTA is also involved in the formation of secondary lymphoid organs during development and plays a role in apoptosis.

The process is thought to involve two interrelated processes, occurring in the germinal centers of the secondary lymphoid organs:

Additionally, it acts as an adhesion molecule for leukocytes on peripheral lymphoid organs and inflammation sites.

Central memory T-lymphocytes, which have encountered antigen, express L-selectin to localize in secondary lymphoid organs.

LTBR is also essential for development and organization of the secondary lymphoid organs and chemokine release.

Post mortem finding should show significant atrophy of the lymphoid organs, haemorrhage throughout the tissues and pale watery bone marrow.

The fibers form a soft skeleton (stroma) to support the lymphoid organs (lymph nodes, red bone marrow, and spleen).

The effects are similar to TNF-alpha, but TNF-beta is also important for the development of lymphoid organs.

Early age onset of this disease in males causes severe enlargement of the secondary lymphoid organs, insulin dependent diabetes, eczema, food allergies, and infections.

As this tolerance is dependent on encountering the self-antigens during maturation, lymphocytes can only develop central tolerance towards those antigens present in primary lymphoid organs.

In an adult animal, the peripheral lymphoid organs contain a mixture of B and T cells in at least three stages of differentiation:

It acts as an adhesive ligand for interacting with a variety of immune cell types and may play a role in lymphocyte homing to secondary lymphoid organs.

The spleen and tonsils are large lymphoid organs that serve similar functions to lymph nodes, though the spleen filters blood cells rather than lymph.