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.
Periodical. Hayes, William. "Genetic Transformation: a Retrospective Appreciation." Journal of General Microbiology 45, 3 (December 1966): 385-397. Article. 1 Image.. Journal of General Microbiology