Page 1540 - Veterinary Immunology, 10th Edition

VetBooks.ir Fc receptor A cell surface receptor that specifically binds antibody

molecules through their Fc region.

Fc region That part of an immunoglobulin molecule consisting of

the C-terminal half of heavy chains. It is responsible for the
biological activities of the molecule.

Firmicutes A bacterial phylum consisting mainly of Gram-positive
bacteria characterized by having a low G+C ratio. They include
important bacteria such as the Clostridia, Listeria,
Erysipelothrix, and Bacillus

Fluorescent antibody An antibody chemically attached to a
fluorescent dye.

Framework regions The parts of a variable region of
immunoglobulins and TCRs that have a relatively constant

amino acid sequence and so form a structure on which the
hypervariable complementarity determining regions may be
constructed.

G

G-proteins Guanosine triphosphate (GTP)–binding proteins that

act as signal transducers for many cell surface receptors.

Gamma-globulins (γ−globulins) Serum proteins that migrate

toward the cathode on electrophoresis. They contain most of the
immunoglobulins.

Gammopathies Abnormal increases in γ-globulin levels.

Gel diffusion An immunoprecipitation technique that involves

letting antigen and antibody meet and precipitate in a clear gel,
such as agar.

Gene complex A cluster of related genes occupying a restricted

area of a chromosome.

Gene conversion The exchange of blocks of DNA between

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