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Kinetics of p38 MAPK activation by NaSal and TNF. COS-1 cells were either left untreated (Ctrl) or treated for the indicated times with TNF (20 ng/ml) or NaSal (20 mM). Lysates were blotted with anti-phospho-p38 MAPK antibody (pp38; top panel) and with anti-p38 MAPK antibody (p38; bottom panel).
