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(Click for frequent words.) 75 oxygen atoms 73 carbon atom 72 hydrogens 71 nitrogen atoms 71 hydrogen atom 70 nitrogen atom 69 chlorine atom 68 sulfur atoms 67 hydrogen atoms 67 sulfur atom 65 valence electrons 65 molecule 63 dimer 63 hydroxyl 63 trimers 62 histidine 62 sodium atoms 62 oxygens 62 covalent bond 62 strange quark 61 dimers 61 guanine 61 intramolecular 61 bilayer 61 fluorine atom 61 thiols 61 exciton 61 weakly interacting 61 hydrogen ions 61 zinc ions 61 atoms 61 hydrophobic interactions 60 helices 60 intermolecular 60 alkynes 60 epoxide 60 porphyrin 60 chromophore 60 dye molecules 60 chlorine atoms 60 diatomic 60 orbitals 60 silicon atoms 60 deuterium atoms 60 amide 60 potassium atoms 60 carbon atoms 59 anion 59 phosphorus atom 59 macrocycle 59 methyl groups 59 magnesium ions 59 stilbene 59 quantum particle 59 rubidium atom 59 donor acceptor 59 disulfide bond 59 hydrogen nuclei 59 protonated 59 quantum superposition 59 antiparticle 59 alkyl 59 crystal lattice 59 oppositely charged 59 isotope ratios 59 fermionic atoms 59 boron atoms 59 membered rings 59 adenine 59 covalent bonds 58 aqueous solution 58 membered ring 58 unpaired electrons 58 molecules 58 chemically reactive 58 anions 58 adsorbed 58 rubidium atoms 58 helium atoms 58 unpaired electron 58 aldehyde 58 bipyridine 58 nucleons 58 Mott insulator 58 electric dipole 58 silicon monoxide 58 actin binding 58 alkyne 58 electron 58 alkane 58 nuclei 58 amino acids 58 alkene 58 thiol 58 tetramer 58 crystallites 58 magnetic dipole 57 carbene 57 superfluid 57 tetramers 57 antibody antigen 57 oxygen ions 57 Hydrogen atoms 57 fermion 57 electrophilic 57 phosphorus atoms 57 organic molecules 57 toroid 57 reactant 57 glucose oxidase 57 manganese atoms 57 antiferromagnetic 57 subunits 57 dinitrogen 57 thymine 57 reactants 57 disulfide 57 chromophores 57 graphene sheet 57 excitons 57 photochemically 56 electron pairs 56 lipid membrane 56 photosystem II 56 amino acid residues 56 van der Waals forces 56 hydroxide 56 laser pulse 56 meson 56 silicate minerals 56 electron spins 56 catalytically active 56 polaritons 56 thymine T 56 conduction electrons 56 helium nuclei 56 ceria 56 macromolecule 56 antiparallel 56 nanoclusters 56 Bose Einstein Condensate 56 baryon 56 dihydrogen 56 fluorine atoms 56 hydroxide ions 56 moieties 56 chlorophyll molecule 56 lipid bilayer 56 nucleobases 56 ionise 56 flavin 56 electron pairing 56 nucleobase 56 wavefunction 56 dipole moment 56 bosonic 56 phosphonate 56 redox reactions 56 antiquark 56 alanine 56 fluorescent molecule 56 pentacene molecule 56 adatoms 56 duplicated chromosomes 55 streptavidin 55 monosaccharide 55 methyl 55 sister chromatids 55 fluorophore 55 protein subunits 55 hydrocarbon molecules 55 uracil 55 electron density 55 biomolecule 55 electron orbitals 55 electrons orbiting 55 tholins 55 graphene layers 55 valence electron 55 serine 55 diene 55 NH4 + 55 γ 55 heparan sulfate 55 pyridine 55 cytosine C 55 ions 55 crystal lattices 55 elongated orbits 55 alkali metal 55 porphyrins 55 chloride ions 55 electron orbiting 55 titania nanotubes 55 tetrahedral 55 σ 55 oxidizing agent 55 bosons 55 van der Waals 55 cysteine 55 nucleophilic 55 crosslinks 55 cesium vapor 55 metal ions 55 cadherins 55 alkanes 55 racemic mixture 55 polariton 55 lanthanum strontium 55 pyrimidine 55 hydroxyl molecules 55 riboswitch 55 formate 55 alpha particles 55 graphane 55 hemoglobin molecules 55 fermions 55 magnesium ion 55 ultracold 55 adsorb 55 cofactor 55 atomic nucleus 55 electrostatic repulsion 54 fullerene 54 SiO 54 extracellular domain 54 stoichiometry 54 nanorod 54 aryl 54 cesium atoms 54 vibrationally excited 54 covalent bonding 54 vibrational modes 54 ferromagnet 54 uranyl 54 icosahedral 54 quinone 54 fluorophores 54 electronic excitations 54 isotope ratio 54 cyclization 54 adduct 54 glomerulus 54 alkenes 54 COOH 54 chemically bonded 54 supersolid 54 carbonate globules 54 hydroxyl radicals 54 fluorescent molecules 54 hemoglobin molecule 54 absorbs photons 54 protoplanetary disk 54 substituents 54 fluoresces 54 neutrons 54 photosystem 54 alpha helix 54 silica nanoparticles 54 branes 54 alkali atoms 54 carbonyl 54 surfactant molecules 54 HD #b [002] 54 strange quarks 54 hydrides 54 carbonic acid 54 nucleotide 54 lipid molecules 54 anthracene 54 carboxylate 54 cadherin 54 VRC# [001] 54 caveolae 54 metastable 54 cysteine residues 54 neuroligins 54 Saturn magnetosphere 54 ionized oxygen 54 concentration gradient 54 carboxyl 54 C#H# 54 cytosine 54 GJ #b [001] 54 inorganic ions 54 tau neutrinos 54 mesoporous 54 oxidant 54 triphosphate 54 calmodulin 54 photochemistry 54 unpolarized 54 dimerization 54 electrons 53 positronium 53 emits photon 53 cysteines 53 tPNA 53 helium atom 53 exosphere 53 isotope fractionation 53 unreacted 53 cesium atom 53 homologs 53 potassium ions 53 homolog 53 divalent 53 ssDNA 53 adsorbs 53 antineutrino 53 fermionic 53 saccharide 53 solvation 53 methanogenesis 53 chemisorption 53 electrical conductance 53 hydroxyphenyl 53 rotaxane 53 biphenyl 53 chirality 53 nanodroplets 53 chromatid 53 deuterium 53 methylene 53 guanosine 53 coiled coil 53 dopants 53 molecularly 53 mesons 53 collagen fibrils 53 ultracold atoms 53 titin 53 strontium titanate 53 atomic nuclei 53 diffusible 53 micelle 53 bromine atoms 53 melittin 53 deuterated 53 cm -1 53 monomers 53 mannose 53 intermolecular forces 53 microwave photon 53 cuprates 53 dumbbell shaped 53 electrostatic attraction 53 tRNA synthetase 53 endonuclease 53 hydrogenase 53 RNA strand 53 kaons 53 noble gases 53 silicates 53 nanopillars 53 globular proteins 53 cytochrome c 53 Carbon dioxide CO2 53 epoxides 53 proton pump 53 ozone O3 53 nebular 53 colocalization 53 amino acid histidine 53 amino acid 53 ultraviolet wavelengths 53 hydrophobic molecules 53 chondrites 53 chlorophyll molecules 53 phonons 53 valine 53 cell cytoplasm 53 electron tunneling 53 hydride 53 hydrolyzing 53 azide 53 dipolar 53 hexamers 53 isomers 53 nucleotides 53 guanine G 53 antineutrinos 53 anionic 53 eclogitic 53 magnetisation 53 antihelium 4 53 odorant molecule 53 antiproton 53 chiral molecule 53 desorbed 53 Rydberg atom 53 ionizes 53 ferric iron 53 titania 53 cell outer membrane 53 Shewanella 53 female reproductive tract 53 AChE 53 disulfide bonds 53 Fermions 53 plasmon 53 ruthenium catalyst 53 peroxidase 52 nucleon 52 cobalt atom 52 chiral molecules 52 nanodots 52 atom 52 chlorophylls 52 ligand receptor 52 radioactive nuclei 52 X ray pulses 52 polypeptide 52 membrane pores 52 olfactory neurons 52 organometallic 52 soluble proteins 52 DNA strands 52 antiparticles 52 GJ #b [002] 52 clathrate 52 cysteine residue 52 sulfur isotope 52 SWNTs 52 ribose 52 protein filaments 52 calcium ions 52 thermal decomposition 52 ionized 52 resonator 52 imine 52 MWNT 52 acetyl CoA 52 carboxylic acid 52 cm -3 52 osmium 52 rotaxanes 52 paramagnetic 52 excitations 52 avidin 52 cycloaddition 52 isomeric 52 Bose Einstein condensate 52 vibrational frequency 52 polypeptide chain 52 isoprenoid 52 disulphide 52 hexamer 52 crystalline structure 52 infrared laser pulses 52 photochemical reaction 52 infrared laser beam 52 silicate dust 52 adsorbed onto 52 gamma rays emitted 52 transmembrane 52 ferroelectricity 52 nitrogen N2 52 covalently 52 lipophilic 52 chromatids 52 bacterial enzyme 52 receptor molecule 52 azides 52 aromatic compounds 52 luminal surface 52 monolayers 52 orbital resonance 52 monomeric 52 absorbs photon 52 hyperfine 52 endosome 52 Fig. 4B 52 fluorescent dye molecules 52 Diels Alder reaction 52 californium 52 germanium silicon 52 valence band 52 qubit 52 vitamin D receptor VDR 52 optical lattice 52 tRNA 52 magnetic coupling 52 carbenes 52 vibrational frequencies 52 monolayer 52 photon 52 SNARE complex 52 Earth magnetotail 52 trimeric 52 heterodimer 52 DNA helix 52 Earth magnetosphere 52 dopant 52 B meson 52 baryons 52 exothermic reaction 52 supercurrent 52 heterodimers 52 absorption spectra 52 magnetic bead 52 positron 52 ligand 52 plagioclase 52 fig. S1 52 photons 52 diffraction grating 52 cobalt atoms 52 single celled algae 52 RecA 52 electrically conducting 52 optical resonator 52 ionic liquid 52 vesicle 52 pentamer 52 cytochrome 52 infrared photons 52 nanomotors 52 transfer FRET 52 tyrosine 52 ethyl ester 52 antimatter particles 52 emission spectra 52 kcal mol 52 anode electrode 52 chlorine monoxide 51 cobalt ions 51 borane 51 carbonate minerals 51 colloidal nanocrystals 51 interconversion 51 cryptochrome 51 RNA molecule 51 selenide 51 oxygen isotopes 51 palladium nanoparticles 51 chloroplast 51 Methane hydrate 51 fluorescence spectra 51 graphite oxide 51 neutral mass spectrometer 51 molecule buckminsterfullerene 51 isotopic ratios 51 agarose 51 quasicrystal 51 nanosized particles 51 interfacial 51 covalently bonded 51 trimer 51 aliphatic 51 carborane 51 superatoms 51 azobenzene 51 lysine residues 51 electrostatic interactions 51 RNA fragments 51 poly L lysine 51 nonmagnetic 51 Fig. 1A 51 neutrino mass 51 hydrophobicity 51 amorphous calcium carbonate 51 hydrophobic surfaces 51 neutralinos 51 pyrrolysine 51 tetrahedron 51 vibrationally 51 circularly polarized light 51 fluorescence resonance energy 51 HIP1 51 spicule 51 lattice vibrations 51 Phenylalanine 51 translocates 51 Raman scattering 51 glucosides 51 multivesicular bodies 51 ionised 51 steric 51 outer membrane 51 UV photons 51 pn junction 51 ribonuclease 51 muon 51 ribozyme 51 boson 51 electrochemical reaction 51 ciliated 51 galactic disk 51 glycolipids 51 aerosol particles 51 thioester 51 photosystems 51 molecules adsorbed 51 resonant tunneling 51 hydrophilic polymer 51 diamagnetic 51 buckyball 51 hydroperoxide 51 ATP hydrolysis 51 pyrophosphate 51 pyruvate 51 activates guanylate cyclase C 51 helium ions 51 anodic 51 intercalation 51 nanobubbles 51 poly ethylene glycol 51 ionized gas 51 Casimir cavity 51 myoglobin 51 calcium fluoride 51 interstellar clouds 51 electron neutrino 51 isotopic compositions 51 dsRNA 51 extrasolar planet 51 adsorbing 51 inorganic compounds 51 electron neutrinos 51 PrP 51 NWs 51 superheavy element 51 phytochrome 51 ferromagnetism 51 icy comets 51 proton 51 polymerizes 51 Hydrogen sulphide 51 κ 51 formamide 51 electron acceptors 51 quasiparticle 51 pyroxene 51 pentane 51 axions 51 mitochondrial membrane 51 Venusian atmosphere 51 liquid electrolyte 51 nucleate 51 electrons behave 51 GZK cutoff 51 pions 51 buckminsterfullerene 51 asparagine 51 solutes 51 analyte 51 vacuoles 51 nanodiamond 51 molecular orbitals 51 RNA sequences 51 photochemical reactions 51 oxidants 51 magnons 51 silicon waveguide 51 hydrolysis 51 colloidal particles 51 massless particles 51 cadmium sulfide 51 site directed mutagenesis 51 superfluids 51 electron affinities 51 antihydrogen 51 spherical particles 51 Entangled photons 51 nitrogenase 51 vacuole 51 photoelectrochemical 51 ligands 51 yttrium barium copper 51 chalcogenides 51 ionize 51 cesium ions 51 #S subunit 51 circumstellar disk 51 linker molecules 51 lipid membranes 51 halide 51 LOV domain 51 QDs 51 diffraction pattern 50 cytidine 50 fibrin gel 50 triangular lattice 50 electron proton 50 olivines 50 5' triphosphate 50 β 50 solar nebula 50 superconductive 50 microcapsule 50 photolysis 50 reprogramming genes 50 nanometers thick 50 graviton 50 nucleotide bases 50 quasiparticles 50 conformations 50 polyphosphate 50 moonlet 50 amorphous silica 50 magnetic monopoles 50 dephosphorylation 50 unreactive 50 graphene membrane 50 homologous chromosomes 50 micrometre sized 50 ATPases 50 layer graphene 50 gluon 50 superposition 50 inner mitochondrial membrane 50 superposed 50 micelles 50 conjugated polymers 50 sphingomyelin 50 proline 50 Muons 50 entangled photons 50 antibody binds 50 vibrational excitation 50 homodimers 50 biological molecules 50 ultracold gas 50 cementite 50 GJ#b 50 Fig. 2b 50 titanium oxide 50 carbonaceous chondrites 50 isotopic composition 50 sodium potassium 50 presynaptic 50 adsorption 50 protons neutrons 50 delocalized 50 active galactic nucleus 50 WIMPs 50 vesicle membrane 50 helical structure 50 sodium hydride 50 fig. S2 50 oxygenic photosynthesis 50 cellular membranes 50 electron acceptor 50 carbonyl sulfide 50 CD4 receptors 50 ultracold molecules 50 electrochemical reactions 50 cadmium selenide 50 oligomerization 50 pseudogap 50 enzyme luciferase 50 microcavities 50 fibrillar 50 stony meteorites 50 photocatalysis 50 carbonyls 50 cohesin 50 cellular organelles 50 eukaryote 50 laser excitation 50 gallium indium 50 dimeric 50 Tat protein 50 absorbance 50 femtoseconds 50 methane CH4 50 heptane 50 sialic acids 50 N acetylglucosamine 50 ubiquitins 50 graphene oxide 50 Rubisco 50 iron oxide nanoparticles 50 catalytically 50 parahydrogen 50 nanobelts 50 nanocubes 50 Photosystem II 50 membrane fusion 50 surface plasmon 50 topoisomerase 50 nanospheres 50 #BP# 50 strontium atoms 50 olivine 50 aldehydes 50 Neu5Gc 50 Rab# 50 microcavity 50 microfluidic channels 50 silica spheres 50 clathrates 50 alkylated 50 beryllium ion 50 chondrules 50 transiting planet 50 C3 convertase 50 crustal rocks 50 photodetector 50 electrons emitted 50 hydroxyl radical 50 amyloid peptides 50 oligomer 50 chemically 50 photosynthetic bacteria 50 photon energies 50 peptide fragments 50 carbons 50 membrane protein 50 icy moons 50 linearly polarized 50 η 50 carboxylic acids 50 beryllium ions 50 cited krypton strontium 50 resonant cavity 50 AMPA receptors 50 quantum mechanically 50 phonon 50 PDZ domains 50 hydrolyze 50 emit photon 50 amino acid substitutions 50 plasminogen 50 magnetization 50 cell adhesion molecules 50 phospholipids 50 anode cathode 50 resonance frequency 50 undoped 50 aspartic acid 50 atomic lattice 50 graphite whiskers 50 leucine zipper 50 Eq. 50 Ultraviolet light 50 unicellular organism 50 optical wavelengths 50 pyrimidines 50 emits photons 50 phenanthrene 50 chlorine ions 50 nanocrystals 50 alpha helical 50 quark gluon plasma 50 nanodiamonds 50 solubilizing 50 spatial dimensions 50 piconewtons 50 gate electrode 50 Epsilon Eridani 50 intermolecular interactions 50 iron arsenide 50 absorbs ultraviolet 50 leucine 50 μm diameter 50 polyethylene glycol PEG 50 ytterbium 50 fission yeast 50 piRNAs 50 refractive index 50 electrochemical 50 aspartyl 50 monosaccharides 50 nanostructure 50 rotifer 50 gravitational lens 50 titanium atoms 50 synaptic vesicles 50 PEDOT 50 microscopic pores 50 biotinylated 50 nanoprobe 50 filamentary 50 HD#b 50 tubules 50 chloroplasts 49 actin filament 49 spectrographs 49 absorb neutrons 49 Zeolites 49 isotopic signature 49 Formic acid 49 glycans 49 Golgi apparatus 49 superatom 49 Raman spectra 49 fissions 49 multi walled nanotubes 49 phosphatidylinositol 49 helicases 49 GAPDH 49 refractive indices 49 dielectric layer 49 kinesins 49 kinesin motor 49 isotopic measurements 49 tRNAs 49 P gp 49 oxygen isotope 49 magnetic reconnection 49 fluorescent dye 49 thymidine 49 cyanide ions 49 disulfide bridges 49 octahedral 49 micrometer sized 49 CMB photons 49 Fig. 3b 49 calcite crystals 49 oligomeric 49 aqueous phase 49 cometary material 49 topological insulator 49 surface plasmons 49 phospholipid 49 fluorescent dyes 49 boron nitride nanotubes 49 sodium ions 49 nanometer sized 49 hexagonal lattice 49 centrosome 49 chemical reactivity 49 protein fragment 49 depolarized 49 berkelium 49 phosphatidylserine 49 biominerals 49 CdSe 49 nanolayer 49 nonpolar 49 lyase 49 Cx# [001] 49 glycolipid 49 flagellum 49 dielectric layers 49 conductivity 49 platinum Pt 49 boron nitride 49 spectral fingerprint 49 chondritic 49 magnetosomes 49 cell membrane 49 rubidium vapor 49 bacterial enzymes 49 molecular sieve 49 aspartate 49 X ray diffraction pattern 49 ultrasonic vibrations 49 magnetotail 49 bilayers 49 gravitational attraction 49 organelle 49 electron positron pairs 49 luciferin 49 VHE gamma rays 49 spectral signature 49 rhodopsin 49 crystalline silicates 49 ammonia NH3 49 Saturn outermost ring 49 liquid droplets 49 centromere 49 pepsin 49 cerium 49 antiquarks 49 emit photons 49 ω 49 Corot 9b 49 WASP #b 49 Bose Einstein condensates 49 6S RNA 49 crosslinked 49 diffracted 49 fluorescence intensity 49 dynamin 49 electron spin 49 carbonic 49 alpha particle 49 gravitational interaction 49 phenylene 49 microcapsules 49 ionized hydrogen 49 olfactory receptor 49 centromeres 49 quadrillionths 49 ferrocene 49 gravitationally bound 49 magma ocean 49 quantum oscillations 49 nucleotide sequences 49 sulfate aerosols 49 planet Uranus 49 lipid vesicles 49 ultracold temperatures 49 quark 49 Bose Einstein condensation 49 lunar crust