Bursa of Fabricius

An epithelial outgrowth of the cloaca in birds similar to the thymus in mammals. It atrophies within 6 months after birth and remains as a fibrous remnant in adult birds. It is composed of lymphoid tissue and prior to involution, is the site of B-lymphocyte maturation.

Year introduced: 1966(1965)

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Tree Number(s): A10.549.175, A13.163, A15.382.520.604.114

MeSH Unique ID: D002060

Entry Terms:

• Fabricius Bursa

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Anatomy Category
Tissues
Lymphoid Tissue
Bursa of Fabricius

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Anatomy Category
Animal Structures
Bursa of Fabricius

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Anatomy Category
Hemic and Immune Systems
Immune System
Lymphatic System
Lymphoid Tissue
Bursa of Fabricius