?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Wilkins&rft.au=Wilkins%2C+Andrew&rft.aufirst=Andrew&rft.inst=UCL+(University+College+London)&rft.tpages=192&rft.degree=Doctoral&rft.date=2000&rft.title=The+function+of+Ras+proteins+in+Dictyostelium+discoideum