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.
SDS-PAGE analysis of the radiolabeled proteins produced upon direct in vitro transcription-translation assays of the amplification products of the coding retroviral envelope genes obtained from the corresponding BAC clones. Arrowheads point to the translation products of the expected size for each envelope gene. Bands of higher molecular weight are observed for EnvF(c)2, most probably associated with the presence of a frameshift signal at the env gene 3′ end (3).
