FIG. 6.
Serum neutralizing antibody titers. Sera obtained (A) preinfection (open symbols) and at 6 d.p.i. (solid symbols) from B6, TCRα−/−, and Btk−/− mice that had been infected with 104 PFU, (B) 7 d.p.i. from B6 and Btk−/− mice that had been infected with 700 PFU, (C) 9 d.p.i. from B6 and Aβb−/− mice that had been mock infected (open symbols) or infected (solid symbols) with 700 PFU, and (D) 12 d.p.i. from B6 and Btk−/− mice that had been mock infected (open symbols) or infected (solid symbols) with 1 PFU of MAV-1. The dotted line represents the limit of detection. Each symbol represents serum from an individual mouse.