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Effects of EGTA (5 mM) on pneumolysin (Pln; 8.37 and 41.75 ng/ml)-mediated enhancement of production of LTB4 and PGE2 by unstimulated and FMLP (1 μM)-activated neutrophils. The results of two (PGE2) or three (LTB4) experiments using cells from different donors are expressed as the mean ± the SEM.
