?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Barrios&rft.aufirst=Arantza&rft.au=Barrios%2C+Arantza&rft.date=2002&rft.tpages=254&rft.degree=Doctoral&rft.title=The+role+of+the+Eph+signalling+pathway+in+epithelialisation+of+the+somites&rft.inst=UCL+(University+College+London)