The main Ensembl site www.ensembl.org is updated with the latest data on a monthly basis.
The Ensembl Archive sites have been set up so there is a stable link for three years to pages from a particular release (e.g. version 56 from September 2009) in Ensembl.
These links will be suitable for referring to Ensembl pages in publications.
A few older archives may be maintained if they include significant datasets for key species, but the availability of these sites cannot be guaranteed.
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