LPS decreases only T cell proliferative response to OKT3.

<p>PBMC were first treated with medium (white points) or primed with 10 ng/mL LPS (black points), then cells were stimulated with 0.1 to 4 μg/mL PHA (<b>A</b>), or 63x10³ to 500x10³ anti-CD2/CD3/CD28-coated beads /mL (<b>B</b>), or 5 to 50 ng/mL OKT3 (<b>C</b>) for 72h. T cell proliferation was measured by flow cytometry and results are expressed as percentages of proliferating cells among total T cells. Each experiment was performed on <i>n</i> = 4 HV. Technical replicates were summarized by the mean for each individual. For each condition, individual values are summarized on the plots by a horizontal line representing the mean of a given condition.