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Pulmonary histopathology scores in SARS-CoV-infected mice with or without GRFT treatment. Tissues were harvested 2 and 4 days postinfection and scored as described in Materials and Methods for evidence of alveolar edema (A), perivascular cellular infiltrates (B), and necrotizing bronchiolitis (C). Results are presented as means ± standard errors. n = 4; *, P ≤ 0.05, by two-way ANOVA with Bonferroni posttest correction.
