?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Barbarulo%2C+A&rft.aulast=Barbarulo&rft.aufirst=A&rft.atitle=Hedgehog+Signalling+in+the+Embryonic+Mouse+Thymus&rft.title=Journal+of+Developmental+Biology&rft.issue=3&rft.volume=4&rft.date=September+2016&rft.issn=2221-3759&rft.genre=article