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Chromosomal orphon set

A chromosomal orphon set is a set of IG or TR orphons (genes outside from the main loci) belonging to a same group and localized on the same chromosome in a given species [1,2].

The 'chromosomal orphon set' concept is part of the 'CLASSIFICATION' concept of IMGT-ONTOLOGY[3]

There are 12 IG chromosomal orphon sets and one TR chromosomal orphon set in human.

[1] Lefranc, M.-P. and Lefranc, G., The Immunoglobulin FactsBook, Academic Press, 458 pages (2001) ISBN: 012441351X
[2] Lefranc, M.-P. and Lefranc, G., The T cell receptor FactsBook, Academic Press, 398 pages (2001) ISBN: 0124413528.
[3] Giudicelli, V. and Lefranc, M.-P., Bioinformatics, 15, 1047-1054 (1999) PMID: 10745995, LIGM:221 pdf