http://purl.org/commons/record/ncbi_gene/24866
denotes an Entrez Gene record "without commitment as to representation" - that is, the record's declarative content independent of whether the record is rendered as XML, ASN, or RDF. The information in the record may change over time as annotations are added and corrections are made, but it will always be about the same "gene" (a term that unfortunately is not defined). http://purl.org/commons/xml/ncbi_gene/24866
denotes the XML version of the record. http://purl.org/commons/html/ncbi_gene/24866
denotes a web page presenting information from the record in human-readable form.