?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Walker%2C+LS&rft.aufirst=LS&rft.aulast=Walker&rft.volume=36&rft.atitle=CTLA-4+and+Autoimmunity%3A+New+Twists+in+the+Tale&rft.title=Trends+in+Immunology&rft.issue=12&rft.date=1+December+2015&rft.issn=1471-4981&rft.pages=760-762&rft.genre=article