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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>]]
==Introduction==
<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 - 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>
<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>
<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’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 - WikiBlood#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>
<big><center>[[Lymphatic System - Anatomy & Physiology|'''BACK TO LYMPHATIC SYSTEM''']]</center></big>
<big><center>[[Lymphoreticular System - Anatomy & Physiology|'''BACK TO LYMPHORETICULAR SYSTEM''']]</center></big>
<big><center>[[Primary Lymphoid Tissue - Anatomy & Physiology|'''BACK TO PRIMARY LYMPHOID TISSUE''']]</center></big>