Related by context. Frequent words. (Click for all words.) 55 bacterial enzyme 55 protein fragment 54 prion proteins 53 bacterial spores 53 riboswitch 53 metastatic tumor 52 heterochromatin 52 mutant proteins 52 RNA molecule 52 amyloids 52 Rad# 52 fluorescent molecules 51 noble gases 51 gold nanorods 51 amyloid fibrils 51 methanogens 51 isotope ratios 51 nematode worms 50 bacterium 50 anthrax toxin 50 defensins 50 melanoma tumors 50 multicellular organisms 50 superlens 50 submicroscopic 50 bilayer 50 mutant strain 50 DNA strands 50 stromal 50 single celled 50 C. albicans 50 unicellular 50 ultraviolet wavelengths 50 bacterial colonies 50 elemental composition 50 vitamin D receptor 49 lysozyme 49 B. anthracis 49 indole 49 biofilms 49 crystal lattice 49 prokaryotes 49 fluorescent probes 49 cell cytoplasm 49 microscopic 49 synthetic genome 49 iron oxide nanoparticles 49 Bt toxin 49 ribozyme 49 biological molecules 49 melittin 49 microbe 49 Gamma rays 49 mycobacterium 49 arsenic trioxide 49 porphyrins 49 Caenorhabditis elegans 49 oxidants 49 huntingtin 49 PrP 49 collagen fibers 49 lectins 49 single celled organisms 49 monomeric 49 morphologies 49 ribonucleic acid RNA 48 histone modifications 48 nacre 48 symbiont 48 glycan 48 molecule 48 Geobacter 48 microorganism 48 prostate tissue 48 microorganisms 48 solar nebula 48 microbes 48 antimicrobial peptides 48 monolayers 48 nanodiamonds 48 spherules 48 bacterial toxins 48 virions 48 microfossils 48 biomolecule 48 fibrils 48 vacuoles 48 bacterial pathogen 48 viral genome 48 Martian rocks 48 yeast cells 48 nuclei 48 centrosomes 48 alpha particles 48 diffraction pattern 48 lactobacilli 48 protozoan 47 filamentous 47 nanoclusters 47 archaea 47 subatomic particle