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.
[The R.E. Dyer Lecture by Dr. Howard M. Temin, Feb. 6, 1974]
[The R.E. Dyer Lecture by Dr. Howard M. Temin, Feb. 6, 1974]