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.
An ex vivo study of the effects of perfluorooctanoic acid (PFOA) on the human gut microbiota by testing the addition of PFOA to fecal incubations at a concentration of 20 g/L. Incubations were...
data.gov
An official website of the GSA's Technology Transformation Services