TERMIUM Plus®

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ANTIBODY CLASS SWITCHING [1 record]

Record 1 2012-08-31

English

Subject field(s)
  • Immunology
CONT

The first antibodies produced in a humoral immune response are IgM, but activated B cells subsequently undergo isotype switching or class switching to secrete antibodies of different isotypes: IgG [inmunoglobulin G], IgA, and IgE. Isotype switching does not affect antibody specificity significantly, but alters the effector functions that an antibody can engage. Isotype switching occurs by a site-specific recombination involving the deletion of the intervening DNA.

Key term(s)
  • heavy chain class switching

French

Domaine(s)
  • Immunologie
DEF

Processus par lequel une cellule B peut associer de nouveaux gènes de chaînes lourdes d'immunoglobulines à son gène V recombiné pour produire un anticorps de même spécificité mais de classe différente.

OBS

Ce processus est aussi retrouvé dans la commutation isotypique générale que l'on observe au cours de la maturation d'une réponse immunitaire.

Spanish

Campo(s) temático(s)
  • Inmunología
DEF

Proceso durante el cual una célula plasmática deja de producir anticuerpos de una clase y comienza a producirlos de otro distinta.

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