Morphologic analysis of UT-7, UT-7/fus, and HIV-infected UT-7/fus cells. (A) Analysis of UT-7, UT-7/fus, and NL4-3 or NDK HIV-1–infected UT-7/fus cells on the basis of nuclei number (N) as evaluated by optical microscopy. Results from a representative experiment are shown. (B) Cytospin of uninfected UT-7 and UT-7/fus cells compared with UT-7/fus cells infected with NL4-3 or NDK HIV-1 strains. (Original magnification × 400.)