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:_4 ;
    pav:version "20131211" .
  sub:_3 prov:value "We observed that Nur77 is weakly expressed in proliferating myoblasts; however, the transcript is induced 4 fold relative to GAPDH mRNA as the cells exit the cell cycle and fuse to form differentiated multinucleated myotubes that have acquired a muscle-specific phenotype (Fig. 1B). Concomitant with this increase in Nur77 mRNA was the striking induction of the slow (type I, TNNI1) and fast (type II, TNNI2) isoforms of the contractile protein, troponin I, relative to GAPDH mRNA (Fig. 1, D and E)." ;
    prov:wasQuotedFrom pubmed:15640143 .
  sub:_4 rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource pubmed:15640143 ;
    prov:wasDerivedFrom beldoc: , sub:_3 .
}