Fig. 5.
Effect of HIV-1 infection on human marrow cultures. Human marrow cultures were infected with HIV-1 strains NL4-3 or NL4-3▵Vpr (Vpr deletion mutant). The microscope filter was adjusted to project nonadherent cells as light dense. E, free erythrocyte or granulocyte; M, mononuclear phagocyte coated with nonadherent cells.