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 "Symplastic spermatids (sys) male mice are sterile due to a recessive mutation that causes defective adhesion between spermatids and Sertoli cells within the seminiferous epithelium. We show that the mutation in sys mice involves a deletion of 1.24 Mb of chromosome 14. Comparative genomic analysis suggests that this region contains only one gene, Fndc3a. A genetic complementation analysis using mice with a specific mutation within Fndc3a verifies that mutation of Fndc3a is the cause of male sterility in sys mice." ;
    prov:wasQuotedFrom pubmed:16904100 .
  sub:_4 rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource pubmed:16904100 ;
    prov:wasDerivedFrom beldoc: , sub:_3 .
}