Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
ND50s in the sera of mice infected with 1.0 × 102 PFU of influenza A virus strain PR8 before or after passive transfer of anti-PR8. Mice treated with MAb RB6 (triangles) and control mice treated with rat IgG (circles) received NMS (solid symbols) or anti-PR8 antiserum (open symbols) at 1 h before (A), and on day 1 (B) and 3 (C) after, virus infection. Results are expressed as ND50s of pooled sera from 6 to 8 mice per group.
