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Phosphorylation of ATM induced in THP-1 cells after exposure to spores or T-2 toxin. Activation of ATM was analyzed by immunocytochemistry. Cells were stained with a specific antibody against the phosphorylated form of ATM. Cells were exposed to 0.5 × 107 spores/million cells (S. chartarum IBT 9631 and IBT 9634), 4 × 107 spores/million cells (A. versicolor IBT 3781), or 4μM T-2 for 2 h.
