Comment on

• Virologic and immunologic characterization of long-term survivors of human immunodeficiency virus type 1 infection.

  Cao Y, Qin L, Zhang L, Safrit J, Ho DD. Cao Y, et al. N Engl J Med. 1995 Jan 26;332(4):201-8. doi: 10.1056/NEJM199501263320401. N Engl J Med. 1995. PMID: 7808485
• Studies in subjects with long-term nonprogressive human immunodeficiency virus infection.

  Pantaleo G, Menzo S, Vaccarezza M, Graziosi C, Cohen OJ, Demarest JF, Montefiori D, Orenstein JM, Fox C, Schrager LK, et al. Pantaleo G, et al. N Engl J Med. 1995 Jan 26;332(4):209-16. doi: 10.1056/NEJM199501263320402. N Engl J Med. 1995. PMID: 7808486
• Brief report: absence of intact nef sequences in a long-term survivor with nonprogressive HIV-1 infection.

  Kirchhoff F, Greenough TC, Brettler DB, Sullivan JL, Desrosiers RC. Kirchhoff F, et al. N Engl J Med. 1995 Jan 26;332(4):228-32. doi: 10.1056/NEJM199501263320405. N Engl J Med. 1995. PMID: 7808489 No abstract available.