sub:provenance {
  beldoc: dce:description "Approximately 61,000 statements." ;
    dce:rights "Copyright (c) 2011-2012, Selventa. All rights reserved." ;
    dce:title "BEL Framework Large Corpus Document" ;
    pav:authoredBy sub:_6 ;
    pav:version "20131211" .
  sub:_5 prov:value "The extrinsic pathway is activated in vivo by TNF family ligands that engage DD-containing receptors, resulting in activation of DED-containing caspases. The 'death ligands' are expressed on CTLs, NK cells, and other types of immune-relevant cells (activated monocytes/macrophages and dendritic cells) and are used as weapons for eradication of transformed cells (Locksley et al., 2001). tumor suppression by cellular immune mechanisms. For example, Fas-Ligand (FasL) is important for CTL-mediated killing of some tumor targets, and TRAIL (Apo2- Ligand) is critical for NK-mediated tumor suppression." ;
    prov:wasQuotedFrom pubmed:12559172 .
  sub:_6 rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource pubmed:12559172 ;
    prov:wasDerivedFrom beldoc: , sub:_5 .
}