Related by context. Frequent words. (Click for all words.) 60 biochemically 58 water soluble 57 thermally 57 molecule 56 synthetically 56 molecules 56 optically 56 naturally occurring 55 pharmacologically 55 microcapsules 55 soluble 54 nanoparticles 54 chemical composition 53 chemical 53 polymers 53 titanium oxide 53 polymeric 53 fluorescent dye 53 microspheres 53 organic solvents 52 chemical compounds 52 polymer 52 colloidal 52 chemically modified 52 mixtures 52 metal ions 52 oxidizing 52 nanotubes 52 metabolically 52 oxygen atoms 51 hydrogel 51 hydrolysis 51 ligands 51 microstructures 51 UV light 51 salts 51 nanoparticle 51 enzymes 51 liposomes 51 hydrophobic 51 ultraviolet light 51 solvents 50 nano particles 50 physiologically 50 hydrogels 50 oxidants 50 biocompatible 50 fibers 50 acids 50 nanocrystals 50 enzyme 50 glycerol 50 organic molecules 50 monolayer 50 biologically 50 inorganic materials 50 hydroxyl 49 cysteine 49 substances 49 biologically active 49 metabolized 49 proteins 49 aqueous 49 oxidant 49 DNA strands 49 chitin 49 fluorescent dyes 49 alkali 49 esters 49 nanometer sized 49 hydrogen atoms 49 chemicals 49 adsorbed 49 granules 49 biotin 49 peptides 48 organic acids 48 fullerenes 48 substrate 48 amino acids 48 retinoic acid 48 isopropyl alcohol 48 metabolites 48 enzymatic 48 substrates 48 nanocrystal 48 lipids 48 magnetic particles 48 ligand 48 nanofibers 48 membranes 48 carbon atoms 48 mechanically 48 amine 48 monomers 48 aluminum oxide 48 fat soluble 48 phenylalanine 48 sulfate 47 membrane 47 electrically