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. 2013 Oct 29;122(1):34–42. doi: 10.1289/ehp.1307280

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Effect of inhaled LPS dose on leukocyte subset recruitment to the lung following allergen challenge of C57BL/6 mice. Naïve (previously untreated) mice (N) and mice sensitized to OVA using LPS were challenged to aerosolized OVA on a single occasion or on 6 consecutive days; leukocytes were counted in BALF. Values shown are mean ± SE cell number from a single experiment representative of three independent experiments yielding similar results (n = 6 mice/group). *p < 0.05 compared with 0 μg LPS (OVA-only controls). **p < 0.05 for lower LPS dose compared with 10^–1 μg LPS.