several instances. They are also similar to DOIs, but provide human readable collection names, and re-use the record identifier assigned by the data provider. See also MIRIAM Registry BioModels SBML CellML LSID Digital object identifier Persistent uniform resource locator References External links identifiers.org website standards of the COMBINE initiative Open PHACTS, the Open Pharmacological Space Bioinformatics Identifiers Metadata Science and technology in Cambridgeshire South Cambridgeshire District URI schemes