?url_ver=Z39.88-2004&rft_id=10.1111%2Fj.1525-142X.2006.00086.x&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Larroux&rft.aufirst=Claire&rft.au=Larroux%2C+Claire&rft.title=Evolution+and+Development&rft.issn=1520-541X&rft.volume=8&rft.atitle=Developmental+expression+of+transcription+factor+genes+in+a+demosponge%3A+Insights+into+the+origin+of+metazoan+multicellularity&rft.date=March+2006&rft.issue=2&rft.genre=article