In article <5e6jjq$iln at net.bio.net>, morales at zianet.com (Sam Morales) wrote: Read: Ho, D. et al. Rapid turnover of plasma virions & CD4 lymphocytes in HIV-1 infection. Nature 373: 123-126 (1995). -- Dr Alan J. Cann PhD, Department of Microbiology & Immunology, University of Leicester, UK.