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IMGT reference sequences in FASTA format:

Nucleotide sequences with gaps

The FASTA header contains:
IMGT accession number | gene and allele name | species | functionality | exon name | domain name | domain type | alternative splicing (if it is) | partial (if it is) 
>M26441|CD8B*01|Mus musculus|F|EX1|
atgcagccatggctctggctggtcttcagtatgaagctggcag
>M26442|CD8B*01|Mus musculus|F|EX2|[D1]|V-LIKE|
ctctctggagcagctctgccctcattcagaccccttcgtccctgctggttcaaaccaacc
atacggcaaagatgtcctgtgaggttaaaagcatctctaag...............ttaa
caagcatctactggctgcgggagcgccaggaccccaaggacaagtactttgagttcctgg
cctcctggagttcttcc............aaaggagttttgtatggtgaaagtgtggaca
agaaaagaaatataattcttgagtcttcagactcaagacggccctttctcagtatc...a
tgaatgtgaagccagaggacagtgacttctacttctgcgcgacggttgggagc.......
..cccaagatggtctttgggacagggacgaagctgactgtgg
>M26443|CD8B*01|Mus musculus|F|EX3|
ttgatgtccttcctacaactgccccaaccaagaagactaccctgaagatgaagaagaaga
agcaatgcccgttcccccacccagagacccagaagg
>M26444|CD8B*01|Mus musculus|F|EX4|
gcctgacatgcagccttaccaccctcagcctgctggtagtctgcatcctgcttctgctgg
cattcctcggagtggccgtctacttttact
>M26445|CD8B*01|Mus musculus|F|EX5|
gtgtgcggaggagagcccgaattcacttcatgaaac
>M26446|CD8B*01|Mus musculus|F|EX6|
agtttcacaaa
>M22065|CD8B*02|Mus musculus|F|EX1|
atgcagccatggctctggctggtcttcagtatgaagctggcag
>M22066|CD8B*02|Mus musculus|F|EX2|[D1]|V-LIKE|
ctctctggagcagctctgccctcattcagaccccttcgtccctgctggttcaaaccaacc
atacggcaaagatgtcctgtgaggttaaaagcatctctaag...............ttaa
caagcatctactggctgcgggagcgccaggaccccaaggacaagtactttgagttcctgg
cctcctggagttcttcc............aaaggagttttgtatggtgaaagtgtggaca
agaaaagaaatataattcttgagtcttcagactcaagccggccctttctcagtatc...a
tgaatgtgaagccagaggacagtgacttctacttctgcgcgacggttgggagc.......
..cccaagatggtctttgggacagggacgaagctgactgtgg
>M22067|CD8B*02|Mus musculus|F|EX3|
ttgatgtccttcctacaactgccccaaccaagaagactaccctgaagatgaagaagaaga
agcaatgcccgttcccccacccagagacccagaagg
>M22068|CD8B*02|Mus musculus|F|EX4|
gcctgacatgcagccttaccaccctcagcctgctggtagtctgcatcctgcttctgctgg
cattcctcggagtggccgtctacttttact
>M22069|CD8B*02|Mus musculus|F|EX5|
gtgtgcggaggagagcccgaattcacttcatgaaac
>M22070|CD8B*02|Mus musculus|F|EX6|
agtttcacaaa
>U34882|CD8B*02|Mus musculus|F|EX1|
atgcagccatggctctggctggtcttcagtatgaagctggcag
>U34882|CD8B*02|Mus musculus|F|EX2|[D1]|V-LIKE|
ctctctggagcagctctgccctcattcagaccccttcgtccctgctggttcaaaccaacc
atacggcaaagatgtcctgtgaggttaaaagcatctctaag...............ttaa
caagcatctactggctgcgggagcgccaggaccccaaggacaagtactttgagttcctgg
cctcctggagttcttcc............aaaggagttttgtatggtgaaagtgtggaca
agaaaagaaatataattcttgagtcttcagactcaagccggccctttctcagtatc...a
tgaatgtgaagccagaggacagtgacttctacttctgcgcgacggttg
>U34882|CD8B*02|Mus musculus|F|EX5|
ggaggagagcccgaattcacttcatgaaac
>U34882|CD8B*02|Mus musculus|F|EX6|
agtttcacaaa
>AK087944|CD8B*03|Mus musculus|F|EX1|
atgcagccatggctctggctggtcttcagtatgaagctggcag
>AK087944|CD8B*03|Mus musculus|F|EX2|[D1]|V-LIKE|
ctctctggagcagctctgccctcattcagaccccttcgtccctgctggttcaaaccaacc
atacggcaaagatgtcctgtgaggttaaaagcatctctaag...............ttaa
caagcatctactggctgcgggagcgccaggaccccaaggacaagtactttgagttcctgg
cctcctggagttcttcc............aaaggagttttgtatggtgaaagtgtggaca
agaaaagaaatataattcttgagtcttcagactcaagccggccctttctcagtatc...a
tgaatgtgaagccagaggacagtgacttctacttctgcgcgacggttgggagc.......
..cccaagatggtctttgggacagggacgaagctgactgtgg
>AK087944|CD8B*03|Mus musculus|F|EX3|
ttgatgtccttcctacaactgccccaaccaagaagactaccctgaagatgaagaaggaga
agcaatgcccgttcccccacccagagacccagaagg
>AK087944|CD8B*03|Mus musculus|F|EX4|
gcctgacatgcagccttaccaccctcagcctgctggtagtctgcatcctgcttctgctgg
cattcctcggagtggccgtctacttttact
>AK087944|CD8B*03|Mus musculus|F|EX5|
gtgtgcggaggagagcccgaattcacttcatgaaac
>AK087944|CD8B*03|Mus musculus|F|EX6|
agtttcacaaa