Viral titers in tracheonasal and middle ear lavage samples.

<p>Viral clearance from the nasopharynx of WT, <i>C1qa^−/−</i>, and <i>Bf^−/−</i> mice (A) and viral titers on day 7 in middle ear (B). Each data point represents the geometric mean of PFU of IAV (± SEM) per milliliter of the tracheonasal and middle ear lavage fluid. All samples were collected from a total of 10 animals combined from two separate experiments. Relative <i>P</i> values are indicated for each comparison with WT mice. The dashed line represents the detection limit of the assay.