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[[Image:LH_Bursa_Photo.jpg|thumb|150px|right|<p>'''Bursa of Fabricius'''</p><sup>©Nottingham Uni 2008</sup>]]
[[Image:LH_Bursa_Photo.jpg|thumb|150px|right|<p>'''Bursa of Fabricius'''</p><sup>©Nottingham Uni 2008</sup>]]
<p>''Also called the cloacal bursa''</p>
<p>''Also called the cloacal bursa''</p>
<p>It is a [[Primary Lymphoid Tissue - Anatomy & Physiology|primary lymphoid organ]] found in birds. The bursa was the first place that a certain subset of [[Lymphocytes - Anatomy & Physiology|lymphocytes]] was observed and consequently they were named B lymphocytes (<u>b</u>ursa of Fabricius or <u>b</u>ursa equivalent organs). The bursa is involved in the differentiation of [[Lymphocytes - Anatomy & Physiology#B cells|B lymphocytes]].</p>
<p>It is a [[Primary Lymphoid Tissue - Anatomy & Physiology|primary lymphoid organ]] found in birds. The bursa was the first place that a certain subset of [[Lymphocytes - WikiBlood|lymphocytes]] was observed and consequently they were named B lymphocytes (<u>b</u>ursa of Fabricius or <u>b</u>ursa equivalent organs). The bursa is involved in the differentiation of [[Lymphocytes - WikiBlood#B cells|B lymphocytes]].</p>
==Development==
==Development==
[[Image:LH_Bursa_Cloaca_Photo.jpg|thumb|150px|right|<p>'''Bursa of Fabricius'''</p><sup>©Nottingham Uni 2008</sup>]]
[[Image:LH_Bursa_Cloaca_Photo.jpg|thumb|150px|right|<p>'''Bursa of Fabricius'''</p><sup>©Nottingham Uni 2008</sup>]]
Image:LH_Bursa_High_Histology.jpg|<p>'''High power magnification'''</p><sup>©Nottingham Uni 2008</sup></gallery></center>
Image:LH_Bursa_High_Histology.jpg|<p>'''High power magnification'''</p><sup>©Nottingham Uni 2008</sup></gallery></center>
==Functions==
==Functions==
<p>The bursa’s primary function is maturating and causing the differentiation of [[Lymphocytes - Anatomy & Physiology#B cells|B lymphocytes]], it also produces the hormone bursin which activates [[Lymphocytes - Anatomy & Physiology#B cells|B lymphocytes]]. </p>
<p>The bursa’s primary function is maturating and causing the differentiation of [[Lymphocytes - WikiBlood#B cells|B lymphocytes]], it also produces the hormone bursin which activates [[Lymphocytes - WikiBlood#B cells|B lymphocytes]]. </p>
<p>The bursa has some [[Lymphocytes - Anatomy & Physiology#T cells|T lymphocytes]] present near to its opening into the proctodeum where they survey antigens.</p>
<p>The bursa has some [[Lymphocytes - WikiBlood#T cells|T lymphocytes]] present near to its opening into the proctodeum where they survey antigens.</p>
==In pathology==
==In pathology==
*[[Lymphoreticular/Haemotopoietic system - Bursa of Fabricius#Pathology|See here]]
*[[Lymphoreticular/Haemotopoietic system - Bursa of Fabricius#Pathology|See here]]