R5 strains of human immunodeficiency virus type 1 from rapid progressors lacking X4 strains do not possess X4-type

R D Berkowitz1, A B van't Wout, N A Kootstra

  • 1Gladstone Institute of Virology and Immunology, University of California at San Francisco, San Francisco, California, USA.

Journal of Virology
|August 10, 1999
PubMed