Structure and sequence conservation of hao cluster genes of autotrophic ammonia-oxidizing bacteria: evidence for their evolutionary history.
Appl Environ Microbiol. 2005 Sep;71(9):5371-82. doi: 10.1128/AEM.71.9.5371-5382.2005.
Appl Environ Microbiol. 2005.
PMID: 16151127
Free PMC article.