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.
(a) Potential nitrifying activity (pNA) compared with potential ammonia-oxidizing activity (pAOA) and potential nitrite-oxidizing activity (pNOA). (b) amoA gene copy numbers and Nitrobacter 16S rDNA gene copy numbers determined by cPCR (samples from September 1998).
