?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Tiku&rft.aufirst=V&rft.au=Tiku%2C+V&rft.volume=8&rft.atitle=Small+nucleoli+are+a+cellular+hallmark+of+longevity&rft.title=Nature+Communications&rft.issn=2041-1723&rft.date=30+August+2017&rft.genre=article