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"+" or "-" indicates if the gene sequences have been found (+) or not been found (-) rearranged (R), transcribed (T) and/or translated into protein (Pr). Arbitrarily that information is shown on the first line of each gene when the data have been confirmed by several studies.

Functionality is shown between parentheses, (F) and (P), when the accession number refers to rearranged genomic DNA or cDNA and the corresponding germline gene has not yet been isolated.
Functionality is shown between brackets, [F] and [P], when the accession number refers to genomic DNA, but not known as being germline or rearranged.

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cDNAs have been included in this table as they are informative for the gene content of the corresponding genomic cassettes.

Cassette Clone IGI gene name Exon Accession numbers
1 2113 IGHV1S1 U08009
IGHD1
IGHD2
IGHJ1
IGHR1 CH1
CH2
2 #c VCC2 IGHV1S2 U08010
IGHD3
IGHJ2
IGHR2 CH1
CH2
3 #c DD2 IGHJ3 U08011
IGHR3 CH1
4 #c X101 IGHD4 U08012
IGHD5
IGHJ4
IGHR4 CH1

#c: rearranged cDNA.

See also (IMGT Scientific chart):