?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Martinez-Barbera&rft.au=Martinez-Barbera%2C+JP&rft.aufirst=JP&rft.atitle=Hypothalamic+sonic+hedgehog+is+required+for+cell+specification+and+proliferation+of+LHX3%2FLHX4+pituitary+embryonic+precursors&rft.volume=144&rft.date=15+September+2017&rft.pages=3289-3302&rft.issn=0950-1991&rft.title=Development&rft.issue=18&rft.genre=article