Fabricius Bursa
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  Fabricius Bursa



Fabricius Bursa

   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.

RELATED TERMS
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Epithelial
Of the cells that line the internal and external surfaces of the body.

Cloaca
A common passageway for feces, urine and reproduction. At one point in the development of the human embryo, there is a cloaca. It is the far end of a structure called the hindgut. This structure then divides to form a rectum, a bladder, and genitalia. The presence of a cloaca is normal in many adult animals (birds, reptiles, amphibians, some fish, and even a few mammals). However, the persistence of a persistent cloaca in a person is a birth defect (a congenital malformation).

Thymus
The gland responsible for the production of certain white cells known as T-lymphocytes that are important for immune function. The thymus is very sensitive to excess cortisol.

Adult
A person having attained full growth or maturity. Adults are of 19 through 44 years of age.

Tissue
Biological tissue is a group of cells that perform a similar function.The study of tissues is known as histology, or, in connection with disease, histopathology.The classical tools for studying the tissues are the wax block, the tissue stain, and the optical microscope, though developments in electron microscopy, immunofluorescence, and frozen sections have all added to the sum of knowledge in the last couple of decades.



SIMILAR TERMS
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Fabrazyme
Fabrazyme is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): agalsidase beta.

Fabry Disease
Lysosomal storage disease caused by a deficiency of alpha-galactosidase A and resulting in an accumulation of globotriaosylceramide in the renal and cardiovascular systems. The disease is X-linked and is characterized by telangiectatic skin lesions, renal failure, and disturbances of the cardiovascular, gastrointestinal, and central nervous systems.

Fabry's disease
See 'Angiokeratoma corporis diffusum'.

Fabrys Disease
Lysosomal storage disease caused by a deficiency of alpha-galactosidase A and resulting in an accumulation of globotriaosylceramide in the renal and cardiovascular systems. The disease is X-linked and is characterized by telangiectatic skin lesions, renal failure, and disturbances of the cardiovascular, gastrointestinal, and central nervous systems.



PREVIOUS AND NEXT TERMS
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Fusobacterium Infection
Infections with bacteria of the genus FUSOBACTERIUM.

Fusobacterium
A genus of gram-negative, anaerobic, rod-shaped bacteria found in cavities of humans and other animals. No endospores are formed. Some species are pathogenic and occur in various purulent or gangrenous infections.

Fx1A Renal Tubular Antigen
A complex of antigenic proteins obtained from the brush border of kidney tubules. It contains two principal components LDL-RECEPTOR RELATED PROTEIN 2 and LDL-RECEPTOR RELATED PROTEIN-ASSOCIATED PROTEIN. The name of this complex is derived from researcher, Dr. Walter Heymann, who developed an experimental model of membranous glomerulonephritis (GLOMERULONEPHRITIS) by injecting this antigenic complex into rats to induce an autoimmune response.

Fuzzy Logic
Approximate, quantitative reasoning that is concerned with the linguistic ambiguity which exists in natural or synthetic language. At its core are variables such as good, bad, and young as well as modifiers such as more, less, and very. These ordinary terms represent fuzzy sets in a particular problem. Fuzzy logic plays a key role in many medical expert systems.

Futility, Medical
The absence of a useful purpose or useful result in a diagnostic procedure or therapeutic intervention. The situation of a patient whose condition will not be improved by treatment or instances in which treatment preserves permanent unconsciousness or cannot end dependence on intensive medical care. (From Ann Intern Med 1990 Jun 15;112(12):949)

Fabricius Bursa

Fabaviruses
A genus of the family COMOVIRIDAE with a wide host range among dicotyledons and some monocotyledons. They are transmitted nonpersistently by aphids. The type species is broad bean wilt virus 1.

Fabaceae
The large family of plants characterized by pods. Some are edible and some cause LATHYRISM; or FAVISM; and other forms of poisoning. Other species yield useful materials like gums from ACACIA and various lectins like PHYTOHEMAGGLUTININ from PHASEOLUS. Many of them harbor nitrogen-fixing bacteria on their roots.

Fab Immunoglobulins
Antigen-binding fragments composed of one entire light chain and about half of one of the heavy chains, linked to each other by disulfide bonds. Fab contains the antigen binding site which is part of the variable region of the immunoglobulin molecule.

Face Peeling, Chemical
Application of a cauterant to the skin for the purpose of causing a superficial destruction of the epidermis and upper layers of the dermis. After healing, the treated area has new epithelium.

Face Lifts
Plastic surgery performed, usually by excision of skin, for the elimination of wrinkles from the skin.

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