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.
Development of diphtheria toxin fragment A (DTA)-expressing plasmid. The DTA expression vector, containing (a) a chicken β-actin promoter, cytomegalovirus enhancer, and an internal ribosome entry site (IRES) (pCAG–DTA), and (b) a human alpha-fetoprotein (AFP) promoter, cytomegalovirus enhancer, and an IRES (pAFP–DTA).
