?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Mohammed+A.K.&rft.aulast=Nassar&rft.au=Nassar%2C+Mohammed+A.K.&rft.inst=UCL+(University+College+London)&rft.tpages=150&rft.degree=Doctoral&rft.date=1998&rft.title=Reversible+External+Control+of+Gene+Expression+in+an+NR1+Knock-in+Mouse