Agriculture & Biology
marine sediments
93%
ammonia
73%
Nitrosospira
71%
ribosomal RNA
62%
nucleotide sequences
55%
bacteria
48%
acid soils
47%
soil
44%
soil sequences
39%
phylogeny
37%
Nitrosomonas
34%
sampling
31%
RNA libraries
29%
beta-Proteobacteria
28%
enrichment culture
27%
DNA libraries
25%
Proteobacteria
24%
oxidants
21%
sediments
20%
pollution
18%
clones
14%
DNA
11%
methodology
5%
Medicine & Life Sciences
Ammonia
100%
Soil
95%
rRNA Genes
92%
16S Ribosomal RNA
91%
Geologic Sediments
88%
Bacteria
59%
Gene Library
37%
Nitrosomonas
35%
Betaproteobacteria
28%
Acids
26%
Proteobacteria
24%
Polymerase Chain Reaction
20%
Libraries
15%
Clone Cells
14%
Radiation
13%
DNA
9%
Earth & Environmental Sciences
ammonia
70%
gene
67%
bacterium
55%
marine sediment
50%
library
49%
phylogenetics
43%
acid soil
42%
soil
37%
clone
18%
community composition
16%
DNA
14%
radiation
12%
pollution
11%
sediment
8%
comparison
7%
analysis
4%
method
3%