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Effect of augmenting peritoneal neutrophil or macrophage populations on survival rates of mice challenged i.p. with B. anthracis spores. Mice were pretreated with saline i.p. (▪), RB6-8C5 i.p. (▴), 1 ml of 2% starch i.p. 4 h before spore challenge (○), or 1 ml of 2% starch i.p. 4 days before spore challenge (•). The mice were challenged i.p. with approximately 9 × 102 spores and observed for 14 days postchallenge.
