Figure 1.

Sensitivity of the QZ4734 primary HIV-1 isolate and the NL4-3 strain to suppression by a concentrated supernatant from the CD8(HVS) cell line. The autoradiograph represents products of reverse transcriptase assays of culture supernatants from a 96-well plate. Each well contained 9 × 10⁴ activated CD4⁺ cells from a pool of HIV⁻ donors. Virus was titrated in the horizontal dimension, and the supernatant concentrate titrated in the vertical dimension. Cultures were sampled and refed at 3- to 4-day intervals. The figure is from day 7 when control virus titers were 3.2 × 10³ and 9.3 × 10³ TCID_50/ml for the QZ4734 and NL4-3 isolates, respectively.