Definition of Iga

1. Noun. One of the most common of the five major classes of immunoglobulins; the chief antibody in the membranes of the gastrointestinal and respiratory tracts.


Definition of Iga

1. Acronym. immunoglobulin A ¹

¹ Source: wiktionary.com

Medical Definition of Iga

1. Major class of immunoglobulin of external secretions in mammals, also found in serum and body fluids such as tears and saliva and in the respiratory, reproductive, urinary and gastrointestinal tracts. Immunoglobulin A protects the bodys mucosal surfaces from infection and in secretions, it is found as a dimer (400 kD) joined by a short J chain and linked to a secretory portion or transport piece. In serum found as a monomer (170 kD). Immunoglobulin A is the main mechanism for providing local immunity against infections in the gut or respiratory tract and may act by reducing the binding between an immunoglobulin A coated micro organism and a host epithelial cell. Present in human colostrum but not transferred across the placenta. Have heavy chains. (30 Mar 1998)

Lexicographical Neighbors of Iga

Idesia polycarpa
Idiom Neutral
Iditarod
Iditarod Trail
Iditarod Trail Dog Sled Race
Iditarods
Ido
Idoine
Idria columnaris
Idul Fitr
Idumean
Idumeans
Idun
Ieoh Ming Pei
Ig
IgA
IgA-specific serine endopeptidase
IgA deficiency
IgA nephropathy
IgAs
IgD
IgE
IgG
IgG deficiency
IgGs
IgM
IgM antibody capture ELISA
IgM nephropathy
IgMs
IgX

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