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Dose-dependency of acute sarin exposure-induced mortality. No death occurred in the rats exposed to vehicle only (VEH) or a low dose of sarin (SL). In contrast, 11% and 52% mortality was observed in the rats within 2 hours immediately after exposure to moderate (SM) and high doses (SH) of sarin, respectively. * P < 0.01, compared with VEH, SL and SM groups.
