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" ;
    dc:license "Creative Commons Attribution-Non-Commercial-ShareAlike 3.0 Unported License" ;
    pav:authoredBy sub:_6 ;
    pav:version "20131211" .
  sub:_5 prov:value """In SP-C/Dkk1 embryos, however, BMP4 expression is significantly reduced (Fig. 5J).
As discussed above, at E12.5, the efficiency of β-catenin excision in many SP-C/rtTA:tetO-cre
X β-cateninflox embryos is less than 100% in some embryos resulting
in a mosaic pattern of β-catenin expression in the lung airway epithelium. However,
this result proves advantageous since we can determine in a precise cell
specific manner whether loss of β-catenin leads to a loss of BMP4. As expected,
BMP4 and β-catenin are expressed at high levels in distal airway epithelium in
wild-type lungs at E12.5 (Figs. 5K– M). Lungs exhibiting mosaic expression of β-catenin
also express BMP4 in a mosaic pattern that closely correlates with presence
of β-catenin (Figs. 5N–P). Complete loss of β-catenin leads to a complete loss
of BMP4 expression (Figs. 5Q–S).""" ;
    prov:wasQuotedFrom pubmed:15907834 .
  sub:_6 rdfs:comment "support@belframework.org" ;
    rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource pubmed:15907834 ;
    prov:wasDerivedFrom beldoc: , sub:_5 .
}