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Note: from September 2000, IMGT/LIGM-DB flat file releases are numbered as YYYYWW-D where YYYY is the number of the year, WW is the number of the week within the year, and D is the number of the day within the week. IMGT/LIGM-DB and IMGT/3Dstructure-DB flat file releases are weekly updated.

IMGT/LIGM-DB flat files

IMGT/GENE-DB reference sequences

IMGT/3Dstructure-DB flat files

IMGT/MHC-DB release

IMGT-ONTOLOGY