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Survival of vaccinia virus-infected 129/Sv//Ev, GKO, and RGKO mice. Deeply anesthetized, 6- to 8-week-old male mice were inoculated intravenously with 107 PFU of vaccinia virus. There were 12 mice in each group, except that the GKO group had 9 mice. Mice were monitored daily over a 20-day period, and mice with symptoms of life-threatening disease were euthanatized.
