Susceptibility of human immunodeficiency virus replication to acyclic adenosine analogues, and synergy in combination with azidothymidine : M.S. Smith, E.L. Brian, E. DeClercq, and J.S. Pagano. Lineberger Cancer Research Center and Departments of Medicine and Microbiology and Immunology, University of North Carolina, Chapel Hill, N.C., USA, and Division of Microbiology, Rega Institute, Katholieke Universiteit Leuven, Belgium