sub:provenance {
  beldoc: dce:description "Approximately 2000 hand curated statements drawn from 57 PubMeds." ;
    dce:rights "Copyright (c) 2011-2012, Selventa. All Rights Reserved." ;
    dce:title "BEL Framework Small Corpus Document" ;
    dcterms:license "Creative Commons Attribution-Non-Commercial-ShareAlike 3.0 Unported License" ;
    pav:authoredBy sub:_7 ;
    pav:version "1.6" .
  sub:_6 prov:value """Figure 4. The role of hypoxia-inducible factor (HIF) in conferring tumour growth potential.
In solid tumours, HIFa is stabilised under conditions of low oxygen due
to a lack of vascularisation and the subsequent evolution of a hypoxic microenvironment.
In a VHL-null tumour, HIFa is constitutively active, and can initiate
genetic programmes within the entire population of cells that would normally be
activated only under hypoxic conditions.""" ;
    prov:wasQuotedFrom pubmed:15350900 .
  sub:_7 rdfs:comment "support@belframework.org" ;
    rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource pubmed:15350900 ;
    prov:wasDerivedFrom beldoc: , sub:_6 .
}