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FASTA Format is a standard for displaying (nucleotide or protein) sequences in a text file. An entry for a sequence takes up two lines in the file: the first line begins with a ">" symbol, followed by the sequence description, and the second line contains the sequence itself. There is no restriction on the number of sequence entries present in a FASTA file.

For more information and examples, see the FASTA format description on the NCBI site.

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