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.
Potency determination of H5 vaccine samples. Representative SRID gels are shown for analysis of cell‐based A/Astrakhan (A) and egg‐based (C) vaccine. Potency of the cell‐based A/Astrakhan (B) and egg‐based (D) vaccines was determined using six antibody preparations. Potency values determined using homologous antibodies are shown in blue; potency values determined using heterologous A/gyrfalcon/Washington antibodies are shown in red.
