Related by context. Frequent words. (Click for all words.) 55 ribozyme 55 RNA molecule 54 organism 54 alga 54 prokaryotes 54 microbe 54 Archaea 54 diatom 54 diatoms 53 Toxoplasma 52 archaea 52 single celled organisms 52 Wolbachia 51 protozoan 51 microbes 51 single celled 51 astrobiologists 51 spherules 50 Neu5Gc 50 organisms 50 Cyanobacteria 50 cyanobacteria 50 naturally occurring bacteria 50 multicellular 50 biological molecules 50 microorganism 50 bacterial spores 50 eukaryotic cells 50 protein fragment 49 eukaryotic 49 baker yeast 49 extremophiles 49 symbionts 49 micro organism 49 bacterium 49 mutant strains 49 keratinocytes 49 mycobacteria 49 PrP 49 anaerobic bacteria 49 Caenorhabditis elegans 48 nitrogen fixing 48 gut microbes 48 multicellular organisms 48 copepods 48 phages 48 amoebae 48 Microorganisms 48 Photosynthesis 48 cultured cells 48 stromatolites 48 micelles 48 chloroplasts 48 Plasmodium 47 bacterial colonies 47 organelles 47 HSCs 47 microbiota 47 nitrogen fixation 47 prion proteins 47 viral genome 47 microbiome 47 foraminifera 47 astrocytes 47 microorganisms 47 Clostridium 47 reactive oxygen species ROS 47 phage 47 C. elegans 47 mutant strain 47 chondrocytes 46 Bacillus anthracis 46 carbonic acid 46 phytoplankton 46 lysozyme 46 bacterial strains 46 nanomachines 46 amoebas 46 flagellum 46 endothelial progenitor cells 46 mycelium 46 retrovirus 46 bacteriophages 46 Pseudomonas 46 asexual reproduction 46 viral RNA 46 transgenic plants 46 Bacillus 45 prion protein 45 microfossils 45 mesenchymal cells 45 Fungal 45 virulence factors 45 transgenic mouse 45 photosynthetic 45 messenger RNAs 45 pluripotent cells 45 phagocytosis 45 melanosomes 45 glycan 45 microscopic organisms