?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Morgan%2C+Sarah+Jane&rft.aufirst=Sarah+Jane&rft.aulast=Morgan&rft.title=Purification+and+characterisation+of+phosphatidylinositol+3-kinase+from+bovine+brain&rft.tpages=276&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral&rft.date=1991