HIV-infected individuals with the CCR5Δ32/CCR5 genotype have lower HIV RNA levels and higher CD4 cell counts in the early years of the infection than do patients with the wild type - Katzenstein, T; Eugen-Olsen, J; Hofmann, B; Benfield, T; Pedersen, C; Iversen, A; Sørensen, A; Garred, P; Koppelhus, U; Svejgaard, A; Gerstoft, J (Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology, 1997)