||This data set contains non-redundant nucleotide sequences of viruses and viroids from publicly available resources. Sequences less than 50 bases are excluded from this set. Environmental samples are also excluded unless they are from the NCBI RefSeq database. If two sequences have the same taxon ID and they can be aligned with 100% identity, the shorter sequence is treated as a redundant sequence, and it is eliminated from this data set.
Database updated on 2013-05-17 from NCBI Refseq release 59 and Genbank release 195