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Was added to the cells. The figure represents one of at least five similar experiments. (F) Effects of calcium inhibitors on LTA-induced phosphorylation of JNK and c-Jun, RBA-1 cells were pretreated with BAPTA or TG for 1 h and then incubated with 50 mg/ml LTA for the indicated time intervals. Phosphorylation of JNK and c-Jun was determined by western blot using an anti-phospho-JNK or phospho-c-Ju