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Antigen-driven proliferation of human PBMC in the presence of recombinant nematode cystatins. PPD-stimulated proliferation of PBMC of two representative blood donors in the presence of 0.5 μM rCysele1, rCysele2, or rOv17 or of the control protein rOv33. The data shown were obtained with 3.5 × 105 cells from two representative blood donors.
