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Superantigenic activity of SElY in human PBMCs. Human PBMCs were incubated with various concentrations of SEA, SET, and SElY for 72 h. (A) The uptake of [3H]thymidine was determined to assess lymphocyte proliferation. (Β) The production of IFN-γ was determined by sandwich ELISAs. Each bar represents the mean ± standard deviation for triplicate wells from a representative experiment. These data were reproducible in three experiments.
