?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Sermon&rft.aufirst=Beth+A.&rft.au=Sermon%2C+Beth+A.&rft.tpages=274&rft.title=The+interaction+of+p21Ras+with+neurofibromin&rft.date=1997&rft.degree=Doctoral&rft.inst=UCL+(University+College+London)