Related by context. Frequent words. (Click for all words.) 68 ions 65 calcium ions 65 oxygen atoms 64 hydrogen atoms 63 microbubbles 62 molecules 61 reactants 61 micelles 61 metal ions 60 oxidants 60 lithium ions 60 particles 60 microcapsules 59 anion 59 vesicle 58 silver ions 58 ionized gas 58 adsorbed 58 microstructures 58 crystal lattice 58 electrons 58 aerosol particles 57 oxygen atom 57 liposomes 57 ionized 57 bile acids 57 liquid droplets 57 nanospheres 57 adsorption 57 tubules 57 biochemical reactions 57 cell membrane 57 nano particles 57 monolayer 57 hydroxyl 56 microparticles 56 magnetization 56 excitons 56 atoms 56 hydrolysis 56 water vapor 56 SWNTs 56 oxidation 56 analyte 56 interstellar medium 56 membranes 56 desorption 56 iron oxides 55 magnetic nanoparticles 55 nanoparticles 55 silicates 55 ceramide 55 zeolites 55 nanocrystals 55 sulphates 55 liposome 55 aqueous solution 55 chemical reactions 55 microspheres 55 lipids 55 molecule 54 impurities 54 electron beams 54 interfacial 54 magnetosphere 54 organic molecules 54 crystalline structure 54 cell membranes 54 intracellular 54 ionizing 54 magnetic flux 54 muons 54 biological molecules 54 polymerization 54 macromolecules 54 oxidant 54 phospholipids 54 hydrophobic 54 titanium oxide 54 membrane 54 organic compounds 54 oxidizes 53 helices 53 superfluid 53 Earth magnetosphere 53 phonons 53 anaerobic bacteria 53 oxidizing 53 endocytosis 53 nuclei 53 outer membrane 53 extracellular 53 organic solvents 53 amino acids 53 dimers 53 magnetic fields 53 potassium hydroxide 53 colloidal 53 monomers 53 gases 53 dimer