?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Skipper%2C+John+Charles+Alexander&rft.aulast=Skipper&rft.aufirst=John+Charles+Alexander&rft.date=1993&rft.title=Cytotoxic+T+lymphocyte+responses+to+Ras+protein&rft.tpages=217&rft.degree=Doctoral&rft.inst=UCL+(University+College+London)