Earth & Environmental Sciences
stable isotope
77%
DNA
75%
microorganism
69%
soil
38%
polymorphism
26%
labeling
25%
centrifugation
19%
cell
10%
cesium
9%
water use
7%
fluorescence
7%
incubation
6%
chloride
6%
gene
6%
substrate
5%
bacterium
5%
test
3%
analysis
2%
Agriculture & Biology
soil microorganisms
100%
stable isotopes
95%
DNA
46%
restriction fragment length polymorphism
22%
centrifugation
15%
soil sampling
14%
soil
12%
cesium
10%
chlorides
7%
fluorescence
6%
ribosomal RNA
5%
microorganisms
5%
Escherichia coli
5%
cells
5%
bacteria
4%
water
3%
testing
3%
sampling
2%
genes
2%
methodology
2%
Medicine & Life Sciences
Soil
99%
Isotopes
99%
DNA
51%
Isopycnic Centrifugation
27%
Restriction Fragment Length Polymorphisms
24%
Isotope Labeling
12%
cesium chloride
11%
rRNA Genes
8%
16S Ribosomal RNA
8%
Fluorescence
6%
Escherichia coli
5%
Bacteria
5%
Water
5%