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5. Taxonomy

IMGT Taxonomy tree

Immunoglobulins (IG), T cell receptors (TR) and major histocompatibility (MH) appeared in the early jawed vertebrates about 450 millions years ago. These complex gene families are responsible of the specific (or adaptive) immune response in vertebrates.

The IMGT taxonomy tree describes the classification of the vertebrate species present in IMGT/LIGM-DB the largest IMGT database, and in the other IMGT databases, Web ressources and tools, according to the NCBI taxonomy (1).

All levels of classification shown in the trees (except the ones in dotted rectangles) can be queried in the Taxonomy module of IMGT/LIGM-DB.
Most species English names can also be queried.

Click on yellow rectangles to see the IMGT taxonomy detailed trees.

vertebrata chondrichthyes actinopterygii tetrapoda euteleostei eutheria rodentia primates IMGT Taxonomy tree

IMGT taxonomy detailed trees

Vertebrata Chondrichthyes (cartilaginous fishes)
Actinopterygii (ray-finned fishes) Euteleostei
Tetrapoda (tetrapods) Eutheria (placentals) Rodentia (rodents)

Non-vertebrates in IMGT/LIGM-DB

Exceptionally, non-vertebrate sequences have been entered in IMGT-LIGM-DB. There are :

List of the Latin and English names of the species in IMGT/LIGM-DB

List of the mouse strains in IMGT Repertoire

IMGT note:
(1) For vertebrates with IG, TR and MH (that is jawed vertebrates or Gnathostomata):
Go to the "The taxonomy browser" page.
In "Query", tape "Vertebrata".
Start Search. Then click on "Gnathostomata".
Last updated:
Friday, 22-Sep-2023 18:31:12 CEST
Marianne Colonna, Mohamed Ben Mimoun and Christèle Martinez-Jean
Chantal Ginestoux