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Influenza A infection reveals no significant difference in mortality between Tlr4−/− and wild-type mice. We treated wild-type and Tlr4−/− mice with influenza A virus (A/WSN/33 [H1N1]), using a dose predicted to kill approximately 90% of the mice (∼LD90) (500 plaque-forming units per mouse), and measured (A) mortality and (B) weight daily. n = 9 per group.
