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==Introduction==

==Introduction==

<p>Mucosal associated lymphoid tissue (MALT) covers lymphoid tissues associated with the mucosal surfaces of [[Alimentary - Anatomy & Physiology|alimentary]], [[Cardiorespiratory System - Anatomy & Physiology|respiratory]], [[Urinary System - Anatomy & Physiology|urinary]] and [[Reproductive System - Anatomy & Physiology|reproductive]] tracts. Due to the extent of these surfaces the mucosal lymphoid tissue contains as many [[Lymphocytes - WikiBlood|lymphocytes]] as the rest of body. The MALT is strategically located to intercept pathogens before they enter the body.</p>

<p>Mucosal associated lymphoid tissue (MALT) covers lymphoid tissues associated with the mucosal surfaces of [[Alimentary - Anatomy & Physiology|alimentary]], [[Cardiorespiratory System - Anatomy & Physiology|respiratory]], [[Urinary System - Anatomy & Physiology|urinary]] and [[Reproductive System - Anatomy & Physiology|reproductive]] tracts. Due to the extent of these surfaces the mucosal lymphoid tissue contains as many [[Lymphocytes|lymphocytes]] as the rest of body. The MALT is strategically located to intercept pathogens before they enter the body.</p>

==Development==

==Development==

<p>[[Lymphocytes - WikiBlood#γδ cells|γδ T cells]] migrate to these tissues during foetal development from the [[Thymus - Anatomy & Physiology|thymus]].</p>

<p>[[Lymphocytes#γδ cells|γδ T cells]] migrate to these tissues during foetal development from the [[Thymus - Anatomy & Physiology|thymus]].</p>

==Structure==

==Structure==

<p>The MALT is found in lamina propria and is non-encapsulated lymphoid tissue. In the alimentary and respiratory tract it is more specifically called:

<p>The MALT is found in lamina propria and is non-encapsulated lymphoid tissue. In the alimentary and respiratory tract it is more specifically called:

==Functions==

==Functions==

<p>As with other [[Secondary Lymphoid Tissue - Anatomy & Physiology|secondary lymphoid tissue]] the role of the MALT is to mount an immune response to pathogenic antigens. Cells in the MALT sample antigens at the mucosal surface and then migrate to regional [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] where they divide and differentiate before returning to the mucosal surface as effector cells.</p>

<p>As with other [[Secondary Lymphoid Tissue - Anatomy & Physiology|secondary lymphoid tissue]] the role of the MALT is to mount an immune response to pathogenic antigens. Cells in the MALT sample antigens at the mucosal surface and then migrate to regional [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] where they divide and differentiate before returning to the mucosal surface as effector cells.</p>

<p>In the GALT TGF-β is produced and this causes the [[Lymphocytes - WikiBlood#B cells|B cells]] to produce [[Immunoglobulin A - WikiBlood|IgA]].</p>

<p>In the GALT TGF-β is produced and this causes the [[Lymphocytes#B cells|B cells]] to produce [[Immunoglobulin A - WikiBlood|IgA]].</p>

==Links==

==Links==