An official website of the United States government.

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.

Concept Breadcrumbs

Preferred Term:

nontoxigenic strains

Concept Schemes:
Broader Concept:
Entry Terms:
  • atoxigenic microorganisms
  • nontoxigenic isolates
  • atoxigenic strains
  • nontoxigenic microorganisms
  • non-toxigenic strains
  • non-toxigenic microorganisms
  • non-toxigenic isolates
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2016-06-02