FIG. 9.

Reovirus serum IgG subclass ratio was not affected following mucosal or parenteral infections. BALB/c mice were infected with reovirus orally or in the FP with the indicated reovirus dose ranging from 10⁴ to 10⁹ PFU per mouse, and serum antibody responses were determined 10 days after infection. Bars indicate the standard errors among groups of four mice. Representative data are from two similar experiments.