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Comparison of excreted IL-1β levels. IL-1β in the culture medium of Cos7 cells cotransfected with expression vectors (procaspase-1 and proIL-1β with fASC or vASC) was measured by ELISA. Results are shown as mean ± SE.n = 3, *P < .05. Expression levels of fASC and vASC are shown under the graph.
