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Percent specific lysis by peripheral blood mononuclear cells for infected cells at the times noted after administering inactivated influenza vaccine with (15 subjects) or without QS21 adjuvant (15 subjects). Results are means for the different effector:target cell ratios when A/Taiwan/1/86 (H1N1) or B/Panama/45/90 infected cells were used as both stimulator and target cells.
