Gal-1 does not induce PS exposure in activated human T cells. (A-B) Resting T cells (A) or PHA-activated T cells (B) were incubated with anti–IL-2R, anti–CD-3, anti–TCR-αβ, or isotype control followed by flow cytometric analysis. (C) PHA-activated T cells isolated from 3 separate donors as indicated or MOLT-4 cells were treated with 10 μM Gal-1 followed by detection for PS exposure. Error bars represent the standard deviation of duplicate samples.