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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 ?
Chris Fabby, Unison's national young members' officer, said: "Better- off students get to stay in the nice accommodation while the less well off students are being pushed into the private rental market or lower standard accommodation and losing the benefit of staying within halls of residence and the welfare services they provide.
I'd love to rave on about how fabby and great it was to spend an evening with some of the most wonderful men and women this country has ever produced.
Former Texas House candidate TJ Fabby to senators during testimony on two gun bills that would expand Texans' rights to carry guns on university campuses and holstered handguns openly with a license
FABBY LOGAN Dons stars mob goal hero Shay after he fires home the second to kill off St Mirren and move Aberdeen four points clear at the top
BULLEN MAISIE FORBES (nee Phillips) peacefully in Ayresome Court, Yarm on December 18, afte fr a short illness Much loved and devoted wife of John, mother of John and David, mother- r in-law of Hayley and Annette t and a loving grandm| fabby, y Kaitlyn, Sophie and Chloe Service to celebrate the life of Maisie to be hel| tst Bede's chapel, Teesside Crematorium, Middlesbrough on Friday, January 2 at 1 30p m
Fabfabio and his twin, Fabby, were born in Liberia to a political family.
Here's our chance to help market our beautiful country worldwide - and be in the running for a fabby weekend stay at a luxury boutique hotel (not that we want anything in return.
Unison official Chris Fabby added: "This offer is not enough to help our members working in further education cope with the high cost of food and fuel in the tough year ahead.
Chris Fabby of Unison said: "In the run up to Christmas 180 hard working, loyal British Waterways employees face the nightmare prospect of losing their jobs through no fault of their own.
Chris Fabby of Unison, which represents workers at risk, said: "In the run-up to Christmas, 180 hard-working, loyal British Waterways employees face the nightmare prospect of losing their jobs through no fault of their own.
SHE'S GOT IT SUSSED: Hot shot; SITTING PRETTY: Abi's just fabby in her sexy undies
They think Dire Straits are fabby and the only time they see a nightclub is when they drive by one after a charity ball.