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(A) Flow cytometry dot plots showing the frequency of induced ACH-2 cells, serially diluted in CEM cells and measured by HIV-Flow. The expected frequencies are indicated at the top of each dot plot. The p24+ cells are depicted in red, and the p24− cells are depicted in gray. (B) Correlation between HIV-flow estimates of p24+ cells per million cells and the expected frequency in the serial dilution series.
