?url_ver=Z39.88-2004&rft_id=10.1038%2F375606a0&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Nowak%2C+M.A.&rft.aulast=Nowak&rft.aufirst=M.A.&rft.issue=6532&rft.volume=375&rft.date=June+1995&rft.issn=0028-0836&rft.atitle=Antigenic+oscillations+and+shifting+immunodominance+in+HIV-1+infections&rft.title=Nature&rft.pages=606-611&rft.genre=article