Primary HIV-1 CD4⁺ T cells were infected with two T/F HIV-1 strains (WITO or SUMA). Infected cells were preincubated for 1 h with different doses of bNAbs before co-culture with autologous target cells stained with FarRed dye. After 48 h, the fraction of productively infected (Gag⁺) target cells was measured by flow cytometry. The median inhibitory concentrations (IC50) were calculated with cells from three to four independent donors. Bold indicates IC50 < 0.5 µg/ml; italics indicate IC50 = 0.5–2 µg/ml; single underline indicates IC50 = 2–10 µg/ml; bold and underline indicate IC50 = 10–15 µg/ml. X, no neutralization (<25% inhibition at 15 µg/ml).

Partial neutralization (<90% inhibition at 15 µg/ml).