Related by context. Frequent words. (Click for all words.) 59 Archaea 57 biogeochemical 56 archaea 56 hydrothermal vent 56 protists 56 biogenic 56 prokaryotic 55 eukaryotic 55 primitive organisms 55 microbial ecology 55 photosynthetic organisms 55 human microbiome 55 single celled 54 organismal 54 Cyanobacteria 54 unicellular 54 methanogens 53 Chlamydomonas 53 evolutionarily conserved 53 microbial 53 reactive nitrogen 53 nanobacteria 53 Diatoms 53 prokaryotes 53 slime molds 53 isotope ratios 53 transmembrane 52 amoebae 52 methane CH4 52 naturally occuring 52 photosynthetic bacteria 52 mycobacterial 52 inorganic compounds 52 planktonic 52 zooxanthellae 52 ultracold atoms 52 Streptomyces 52 multicellular 51 clathrates 51 solids liquids 51 extrasolar 51 underwater volcanoes 51 photochemistry 51 nitrogen fixation 51 Shewanella 51 C. albicans 51 naturally occurring 50 dinoflagellates 50 stable isotope 50 macromolecule 50 nanosized 50 cellular membranes 50 nitrogen fixing 50 ribonucleic acid RNA 50 symbiotic bacteria 50 hydroxyl radicals 50 chemical reactivity 50 formate 50 mycobacteria 50 cofactors 50 symbionts 50 protozoa 50 commensal 50 protozoan 50 amphipods 50 single celled organisms 50 homologues 50 Supplementary Fig 50 Geobacter 50 Algal 50 functionalization 50 rDNA 50 gut microbes 49 extremophiles 49 symbiont 49 metagenomic 49 microorganisms 49 fluorescently labeled 49 biological molecules 49 transduction 49 pyrosequencing 49 ligand binding 49 olfactory receptors 49 bacterium Escherichia coli 49 staphylococci 49 vacuoles 49 ultracold 49 physicochemical 49 paramagnetic 49 polyamines 49 secondary metabolites 49 interstellar clouds 49 atmospheric pollutants 49 vesicular 49 histone modifications 49 microbiota 49 diatoms 49 masers 48 pylori 48 chemotaxis 48 lactobacilli