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Fab

 (fragment, antigen-binding)
originally, either of two identical fragments, each containing an antigen combining site, obtained by papain cleavage of the IgG molecule; now generally used as an adjective in terms such as Fab fragment or region, referring to an “arm” of any immunoglobulin monomer, i.e., one light chain and the adjoining heavy chain VH and CH1 domains.
digoxin immune Fab (ovine) a preparation of antigen-binding fragments derived from specific antidigoxin antibodies produced in sheep that have been immunized with digoxin coupled as a hapten to human serum albumin, used as an antidote to life-threatening digoxin and digitoxin overdose; administered intravenously.

FAB

Abbreviation for French-American-British (classification of acute leukemias). See: FAB classification.

Fab

[f ragment, a ntigen-b inding] originally, either of two identical fragments, each containing an antigen combining site, obtained by papain cleavage of the immunoglobulin IgG molecule; now generally used as an adjective to refer to an “arm” of any immunoglobulin monomer.
digoxin immune Fab (ovine)  a preparation of antigen-binding fragments derived from specific antibodies produced against digoxin in sheep; used as an antidote to digoxin and digitoxin overdose.

Fab

the fragment of an antibody molecule that contains the antigen-binding site, consisting of a light chain and part of a heavy chain. Such fragments are produced when antibodies are digested by enzymes, such as the protease papain. Fab fragments are used as an antidote for treating toxicity caused by digoxin, digitoxin, and oleander tea. See also Fc, Digibind.

Fab

Etymology: fragment, antigen-binding
originally, either of two identical fragments, each containing an antigen combining site, obtained by papain cleavage of the IgG molecule. Now it is generally used as an adjective in terms such as Fab fragment or region, referring to an "arm" of any immunoglobulin monomer, i.e., one light chain and the adjoining heavy chain VH and CH1 domains.

alcopop

A popular term for any of the alternative beverages that were formulated in response to an increase in the US federal wine tax in the early 1990s. The spirits industry responded by moving away from wine coolers to malt-based alcoholic beverages including "hard" lemonades and fruit coolers and drinks.

FANCB

A gene on chromosome Xp22.2 that encodes a protein of the Fanconi anaemia complementation group (here, complementation group B), the members of which are related not by sequence similarity, but rather by their assembly into a common nuclear protein complex.

FAB

Abbreviation for French-American-British classification system.

fab

The monovalent antigen-binding fragment of an antibody molecule obtained when the protein is digested with the enzyme papain. It consists of an intact light chain and the immediately-associated terminal and domains of a heavy chain.
References in periodicals archive ?
This will come as a shock if you're still getting to grips with your fabby new cassette player, but cassettes and CDs are now in the automotive dark ages.
FABBY DIABY DO: Abou Diaby is planning a party for next May
As a matter of fact, a few of the Supply Corps officers serving in Iraq are on their second tour, such as LCDR Rick Fabby who shared his personal feeling on the myth.
n Practice getting ready - that means full make-up and co-ordinated fabby outfits - in the dark, while running and checking for baddies behind you and also while driving over speed bumps.
Fabby and John Wray, for example, and the Senate District 2 contest between state Sen.
Swiss adventurer Yves Rossy crossed the Channel and he did it with no in-flight movie, no indulgent wee glass of vino from the bar, no blissful hour of escapism with a Jackie Collins bonkbuster and no space to pack those three fabby sarongs that were on sale at Matalan.
LCDR James Fabby from NAVAIR to JCC-I, Contracting Officer LT Michael Farrar, Reservist to GSU, Herat, Afghanistan, ETT SK2 Jacquelyn Fink, Reservist from SSB2 Quincy, Mass.
It's Jessica Garlick, ex Pop Idol and Eurovision, and fabby fab Welsh girl.
Last year's appointment of millionaire entrepreneur David Hendry as the first outsider to head the firm in 60 years, provoked a major family split with brothers Riccy, Robby and Fabby on one side and their cousins Aldo and Pete on the other.
Fabby, a Waxahachie Republican trying to unseat incumbent state Rep.
LCDR Fabby served as Supply Officer in USS Coronado (AGF 11) prior to his NATO assignment.