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(Click for frequent words.) 65 hollow spheres 63 capillary tubes 62 lotus leaves 62 tubelike 61 silica spheres 61 hollow tube 61 coiled wire 61 Microtubules 61 polymer beads 60 cell outer membrane 60 outer membranes 60 spherical nanoparticles 60 jellylike 60 tracheae 60 spongy tissue 60 sulfur atom 60 PVC tubes 60 mouthparts 59 concentric layers 59 collagen fibrils 59 electrically conducting 59 polymer nanofibers 59 nanoscale pores 59 nanocages 59 hairlike 59 wire mesh tubes 59 blowholes 59 spheroidal 58 secrete mucus 58 cellulose hemicellulose 58 capsids 58 swim bladders 58 helical structures 58 microscopic pores 58 palps 58 polystyrene beads 58 proteinaceous 58 spherical particles 58 fat globules 58 hemoglobin molecules 58 silica nanoparticles 58 cylindrical 58 piezoelectric crystals 58 spinneret 57 waxy coating 57 nanocapsules 57 single celled algae 57 hollow cylinders 57 hydrophilic polymer 57 COFs 57 hexagonal lattice 57 3cm thick 57 polymerizes 57 ropelike 57 funnel shaped 57 uncooked spaghetti 57 alternating layers 57 collagenous 57 membrane pores 57 coated nanoparticles 57 crossbar latches 57 nanoporous 57 electrically insulating 57 sphagnum 57 chemically bonded 57 fingerlike projections 57 wood dowels 57 spheroids 57 radula 57 honeycomb pattern 56 microcapsules containing 56 sanded grout 56 scutes 56 rootlets 56 gill slits 56 concentrically 56 zinc sulfide 56 tubules 56 solidified lava 56 tiny capillaries 56 luminal surface 56 icosahedral 56 tiny pores 56 hexagonal pattern 56 micrometer sized 56 porous membranes 56 hollow cavity 56 varying thicknesses 56 hydrogel polymer 56 graphene sheet 56 meshwork 56 needlelike 56 Lymph nodes 56 PVC tubing 56 microcracks 56 secreting glands 56 collagen fibers 56 yolk sacs 56 cementite 56 nanotube fibers 56 superconducting coils 56 fibrin gel 56 nanobubbles 56 hollow cylindrical 56 nanoribbon 56 trabeculae 56 outer sheath 56 microfabricated 56 tubes 56 spaghetti noodle 56 photonic crystal fiber 56 microwires 56 micrometer scale 56 stainless steel mesh 56 adsorbed onto 56 compressed nitrogen 56 nanochannels 56 rotaxanes 55 hollow fibers 55 cancellous bone 55 calcite crystals 55 nematocysts 55 circumferentially 55 lipid membranes 55 spiracles 55 inorganic nanoparticles 55 micro droplets 55 magnesium ions 55 sacs 55 poly ethylene glycol 55 crystal lattices 55 polymerize 55 lamellar 55 fibrous protein 55 gelatinous substance 55 dielectric layers 55 blubber layer 55 helically 55 hexamers 55 micrometre scale 55 piezoelectric ceramic 55 highly vascularized 55 nanoholes 55 stretchy cords 55 balloonlike 55 amorphous calcium carbonate 55 multi walled nanotubes 55 lamellae 55 waxy substance 55 periosteum 55 trimers 55 soft pliable 55 condyle 55 viscous fluid 55 threadlike 55 actin fibers 55 bilayer 55 fibrous tissues 55 boron nitride nanotubes 55 mucus secretions 55 tubercles 55 fibrous 55 microbeads 55 nano fibers 55 agarose 55 nanoshell 55 polymer matrix 55 rusted iron 55 cambium layer 55 photochemically 55 spicule 55 microdroplets 55 polymersomes 55 gelatinous mass 55 unbranched 55 biocompatible biodegradable 54 SWNT 54 RNA fragments 54 single walled nanotubes 54 toroid 54 alpha helical 54 semi permeable 54 sulfur atoms 54 microscopic spheres 54 distal tip 54 nanometer sized 54 snail shell 54 membranous 54 bulge outward 54 collagen matrix 54 nanospheres 54 Josephson junctions 54 helium atoms 54 spindle shaped 54 fingerlike 54 nanogels 54 capillary tube 54 lipid bilayer 54 F actin 54 protocells 54 Wooden planks 54 bursae 54 montmorillonite 54 laminae 54 manifold assemblies 54 fanlike 54 metamaterial structures 54 plastron 54 puttylike 54 impeller blades 54 colloidal crystals 54 pore spaces 54 atomic lattice 54 mesoporous 54 wormlike 54 micromachines 54 polymerized 54 elastic cord 54 inorganic salts 54 filaments 54 nanodroplets 54 solvent evaporates 54 dacron 54 fungal hyphae 54 conical shaped 54 thick viscous 54 snail shells 54 carbon nanotube composite 54 hydrocarbon molecules 54 pearlite 54 titanium aluminide 54 spermatic cord 54 microscopic crystals 54 thyroid cartilage 54 suspender cables 54 supramolecular 54 polyethylene glycol PEG 54 corn shucks 54 μm diameter 54 actin filaments 54 epoxy putty 54 pinhead sized 54 electrostatic attraction 54 microchannels 54 fibril 54 translucent polycarbonate 54 #/#-inch diameter 54 diffraction grating 54 silica particles 53 pneumatically 53 poly L lysine 53 oblongs 53 fibrin fibers 53 calcium carbonate skeletons 53 azobenzene 53 piercing sucking mouthparts 53 spatulae 53 Block copolymers 53 nanosphere 53 chlorosomes 53 Flower buds 53 titin 53 ovipositor 53 semicircles 53 nanohorns 53 membranes 53 polymer scaffolds 53 longitudinal axis 53 armatures 53 cylindrically shaped 53 peptide fragments 53 permeable membranes 53 micrometres thick 53 hydrophobic molecules 53 polyvinylidene fluoride 53 adhesive caulk 53 tiny tubules 53 bullae 53 amorphous silica 53 Cancerous tumors 53 nanopillars 53 protein subunits 53 expanded polytetrafluoroethylene 53 spherical objects 53 microcavity 53 polydimethylsiloxane 53 zinc ions 53 propellant tanks 53 carbides 53 oviducts 53 biodegradable scaffold 53 radially 53 pelvic girdle 53 humic acids 53 ribbonlike 53 aerosol mist 53 electrochemically 53 lipid membrane 53 dorsal spine 53 mycelia 53 nanobelts 53 cadmium chloride 53 dowel rod 53 SWNTs 53 spongelike 53 micelles 53 mesh tubes 53 multiwalled carbon nanotubes 53 cartilaginous 53 Use paring knife 53 xylem 53 Neutron stars 53 eartip 53 viscous liquid 53 graphite rods 53 MWCNTs 53 microdomains 53 varying diameters 53 mucosal surface 53 yttrium barium copper 53 articular surfaces 53 nonconductive 53 soda straws 53 fibrin clot 53 rubber bushings 53 filamentous 53 microfluidic channels 53 bony structures 53 surfactant molecules 53 rib cages 53 cottonwood fluff 53 alkali metal 53 micrometre 53 varying densities 53 glass frit 53 vibrating strings 53 oppositely charged 53 spikelets 53 dowels 53 covalent bond 53 crystallites 53 sticky mucus 53 resilin 53 shallow depressions 53 pressurized canister 53 granulation tissue 53 cylindrical tube 53 micrometre sized 53 nanosized 53 cm diameter 53 micropipette 53 hairlike structures 53 polyethylene fibers 53 polystyrene spheres 53 jellylike substance 52 uncompacted 52 radioactive cesium isotopes 52 hemlock needles 52 SNAREs 52 equilateral triangles 52 optically transparent 52 electrostatically 52 Shape dough 52 horizontal slits 52 nanorod 52 #/#-inch thick [001] 52 epitaxially 52 garlic slivers 52 pollen particles 52 jointed limbs 52 darning needle 52 cone shaped 52 epithelial layer 52 nanosized particles 52 membered rings 52 pigment particles 52 leaf axils 52 microcapsule 52 fatty blockages 52 protein filaments 52 cartilages 52 chlorophylls 52 flagella 52 micelle 52 stretchy cord 52 leaf undersides 52 submicrometer 52 air sacs alveoli 52 hyphae 52 tart shells 52 bony ridges 52 polymer fibers 52 Photonic crystal 52 watertight seal 52 sciatic nerves 52 nanofibres 52 titanium nitride 52 lightly floured counter 52 nylon ropes 52 micropumps 52 honeycomb structure 52 graphene sheets 52 metallic nanostructures 52 microstructures 52 furring 52 ray florets 52 globular proteins 52 endplates 52 igubal 52 undersurface 52 claylike 52 ionized molecules 52 vertical slits 52 nucleus pulposus 52 crosslinks 52 polymer coated 52 ferrofluid 52 clawlike 52 bamboo skewers 52 fin rays 52 compressive stresses 52 crosslinked 52 chemically reactive 52 nanochannel 52 tart pans 52 silicone caulking 52 chromium alloy 52 inverted cone 52 windpipe trachea 52 Fibrous 52 Cylindrical 52 Conveyor belts 52 aluminum silicate 52 bilayers 52 nanometric 52 polypropylene fibers 52 nickel titanium alloy 52 polymethylmethacrylate 52 photonic bandgap 52 nutlets 52 microspheres 52 hydraulic pistons 52 Carefully peel 52 hyaline 52 controllably 52 hydroxyapatite crystals 52 polypeptide chain 52 microscopic beads 52 pelvic fins 52 Hydrogen atoms 52 gill plates 52 Cut crosswise 52 Pollen grains 52 innermost layer 52 zinc selenide 52 micrometers millionths 52 elastically 52 fibrous connective tissue 52 protuberances 52 rubbery polymer 52 vacuoles 52 microgel 52 crisscross pattern 52 nylon mesh 52 hydrophobic polymers 52 rimless baking sheet 52 magnetically responsive 52 Scrub potatoes 52 wooden skewers 52 balloon inflates 52 Epoxy resin 52 polymer membranes 52 Unroll dough 52 glass prisms 52 bandsaw blades 52 martian rocks 52 collagen molecules 52 crystalline lattice 52 nanotubes 52 sliced crosswise 52 zinc oxide nanowires 52 porous silica 52 digestive juices 52 lipid vesicles 52 chordae 52 emergent vegetation 52 irregular shapes 52 ferric oxide 52 aligned carbon nanotubes 52 streptavidin 52 hollow fiber 52 dowel rods 52 manganese oxide 52 mineral hematite 52 ultrasonic vibrations 52 squid beaks 52 niobium titanium 52 oblong shapes 52 hooks baited 52 chevron pattern 52 spinnerets 52 micrometer sized particles 52 millimeter diameter 52 contoured surfaces 52 endothelial cells lining 52 hydrophobic surfaces 52 cobalt atoms 52 corkscrew shaped 52 Si substrate 52 elongated snout 51 yolk sac 51 polymer substrate 51 spaghetti strands 51 chromophores 51 semipermeable 51 SWCNTs 51 intercalation 51 criss cross pattern 51 mesothelial cells 51 phospholipid molecules 51 Superheated 51 endospores 51 pectoral fins 51 helices 51 ultrananocrystalline diamond 51 Water striders 51 alveoli 51 stabilized zirconia 51 concretion 51 air sacs 51 nanotube arrays 51 semiconducting properties 51 microcapsules 51 Using paring knife 51 plumber putty 51 pericardial sac 51 swirling eddies 51 laths 51 histone proteins 51 nanomesh 51 stinging tentacles 51 polymeric matrix 51 gortex 51 crystalline solids 51 motorized pulley 51 Using melon baller 51 hydroxide ions 51 serrated teeth 51 punctate 51 violet coloring 51 calcium hydroxylapatite 51 nonconducting 51 titanium zirconium 51 oxidiser 51 tetrahedrons 51 titanium mesh 51 bony armor 51 Crimp edges 51 matchstick sized 51 stent struts 51 calcium hydroxyapatite 51 endothelial lining 51 Xenopus embryos 51 wooden timbers 51 vortex generators 51 serrations 51 hydrophobic tails 51 magnesium ion 51 gold nanoshells 51 microscopic bubbles 51 scalloped edges 51 expandable foam 51 floral foam 51 Bose Einstein Condensate 51 crescent dough 51 variably sized 51 wheat kernels 51 metalloproteases 51 solutes 51 dorsally 51 fluorine atoms 51 guide vanes 51 zinc oxide ZnO 51 lobes 51 cadmium sulfide 51 ureters 51 scalelike 51 magnetic coil 51 naturally occurring amino acids 51 cylindrical shaped 51 somites 51 lobule 51 braided rope 51 nanodots 51 anastomosing 51 starch granules 51 Figure 1D 51 atoms ions 51 porphyrins 51 microstructured 51 nano crystals 51 root wads 51 harp strings 51 upholstery tacks 51 ACE inhibitors dilate 51 semicircular canals 51 thick rind 51 biologically inert 51 pleasantly chewy 51 diameters ranging 51 perforated stainless steel 51 prolate 51 wooden skewer 51 dense clumps 51 carbon nanotube arrays 51 boron atoms 51 #cm diameter 51 lengthwise slices 51 perfectly spherical 51 bony protrusions 51 umbels 51 silicon atoms 51 polytetrafluoroethylene PTFE 51 Gunk dripping 51 waterproof membranes 51 tack welds 51 porous polymer 51 electromagnetic coils 51 Lightly butter 51 cryoprobe 51 Nanopores 51 vascularised 51 cementum 51 neurons astrocytes 51 biodegradable scaffolds 51 pinwheel shaped 51 inflatable tubes 51 topmost layer 51 macerating 51 submicron sized 51 thin walled 51 aluminum honeycomb 51 zinc oxide nanostructures 51 colloidal crystal 51 aramid fibers 51 absorbable sutures 51 silicate iron 51 rubberlike 51 spaced evenly 51 chondrules 51 optical waveguides 51 lattices 51 pinky fingernail 51 inflatable pontoons 51 cadmium selenide 51 crosspieces 51 tensile strengths 51 unsymmetrical 51 cellular organelles 51 graphene layers 51 elastic deformation 51 rosemary sprigs 51 radiofrequency waves 51 demineralized bone 51 Methane hydrate 51 globules 51 bony plates 51 nonabsorbable 51 piezoelectric properties 51 lamina 51 urethane coated 51 shear veins 51 PEDOT PSS 51 helixes 51 unevenly spaced 51 digestions 51 octahedral 51 thermally activated 51 parylene 51 Soot particles 51 crispy wonton 51 nanoribbons 51 polypropylene mesh 51 Magnetic nanoparticles 51 polymerised 51 chlorophyll molecules 51 torsion springs 51 microvilli 51 diatomic 51 nitride layer 51 fibrin 51 covalent bonding 51 fruiting bodies 51 tart crust 51 graphane 51 helium ions 51 Gently pat 51 silicate rocks 51 basalt rocks 51 macaroni noodles 51 rectangular slabs 51 magnetic beads 51 cotyledons 51 cadherins 51 glasslike 51 moulins 51 CarboGran 51 warp yarns 51 mussel shells 51 synovium 51 nanoscopic 51 starchy endosperm 51 trophoblasts 51 corpora cavernosa 50 reflowed 50 septa 50 dermal layers 50 quartz chalcopyrite 50 dimensional scaffold 50 Plastic sheeting 50 thermoplastic polyester 50 papillae 50 PEEK OPTIMA 50 clotted blood 50 tetrahedron 50 microelectrodes 50 silicate dust 50 lacrimal gland 50 radiolucent 50 UV stabilized 50 AFM cantilever 50 glutinous rice flour 50 osteocytes 50 heatproof glass 50 granulate 50 tiny flecks 50 polyurethane resin 50 nanotube sheets 50 polymer matrices 50 magnesium fluoride 50 outer diameters 50 epoxides 50 shallow ovenproof dish 50 proteins lipids 50 adatoms 50 gelatinized 50 Cysts 50 tetrahedral 50 gelation 50 Hastelloy C 50 nanomotors 50 seminal vesicles 50 tart tins 50 silicon nanowire 50 prebaked 50 ostracods 50 arching stems 50 arils 50 disulphide 50 caul fat 50 hemolymph 50 antrum 50 metallic flakes 50 lithographically patterned 50 darkly colored 50 polyacrylate 50 maxillary palps 50 toroidal 50 blender jar 50 balloon whisk 50 sapwood 50 knobbed 50 icicle shaped 50 arterioles 50 downy feathers 50 fibrous tissue 50 coconut fronds 50 sphingomyelin 50 nanocells 50 graphene membranes 50 sized chunks 50 linker molecules 50 fletching 50 microelectrode 50 indentions 50 dense mats 50 nanomotor 50 Knead dough 50 paraffin embedded tissue 50 liquid electrolyte 50 flaky phyllo 50 polyhedra 50 #x#cm [001] 50 gelatin capsule 50 clam chum 50 nanoscale particles 50 honey comb 50 ciliated 50 sculpturally 50 meta atoms 50 #cm 3ft 50 knifelike 50 Dhinojwala 50 photonic crystal waveguide 50 outer membrane 50 nanoparticle aggregates 50 parfait glass 50 Calcium carbonate 50 buckyball wheels 50 catheter threaded 50 lamella 50 6mm diameter 50 macroscopically 50 Lithium ions 50 venom glands 50 baleen plates 50 cuticular 50 NWs 50 rifle muzzles 50 cone woofer 50 macromolecule 50 nanotubes nanowires 50 corrosion resistant stainless steel 50 conodonts 50 gold nanospheres 50 polypeptide chains 50 pinholes 50 blastema 50 globular 50 mesodermal 50 Fold dough 50 unicellular algae 50 cheek pouches 50 pencil erasers 50 slurried 50 branes 50 Polycyclic aromatic hydrocarbons 50 cuvettes 50 spatterdock 50 insulating layers 50 spackling compound 50 cancellous 50 electrical insulators 50 helium atom 50 Photonic crystals 50 epoxy matrix 50 bamboo reeds 50 Angioplasty involves 50 hypoechoic 50 quartz carbonate veinlets 50 resonant cavity 50 peritoneal cavity 50 selectins 50 graphite whiskers 50 chalcogenides 50 neural fibers 50 lobed 50 emit X rays 50 tightly compacted 50 ultrafiltration membrane 50 graphite epoxy 50 amnion 50 sepal 50 resin impregnated 50 burls 50 icelike 50 fibrillar 50 polyvinylidene fluoride PVDF 50 wettable 50 Spiral galaxies 50 indium gallium arsenide 50 aperiodic 50 nanofabric 50 microbubbles 50 silicon waveguide 50 dumbbell shaped 50 cesium ions 50 Concertina wire 50 aluminosilicate clay 50 colloidal particles 50 orzo rice 50 vinyl sheeting 50 rills 50 furring strips 50 radiopaque 50 robotic gripper 50 oxidized cholesterol 50 armor piercing shells 50 pectoralis minor 50 terahertz pulses 50 sargassum seaweed 50 papery skins 50 crosswise slices 50 fiberglass cloth 50 phosphorus atoms 50 1cm thick 50 InAs 50 external obliques 50 phyllo pastry 50 gill rakers 50 sparging 50 honeycomb 50 sliced thinly 50 fatty plaques 50 Spider webs 50 dichromate 50 magnetic particles 50 boles 50 membrane 50 silicate mineral 50 filamentous structures 50 resin beads 50 strontium titanate 50 Alternating fibers 50 bulblets 50 nano porous 50 magnetic coils 50 curly tails 50 protein actin 50 microlens arrays 50 larvae burrow 50 nanosheets 50 sucking mouthparts 50 capillaries 50 catheters inserted 50 thermoplastic hoses 50 condyles 50 plantlike 50 abalone shells 50 cambium 50 nanosprings 50 absorber layer 50 tuberous roots 50 fork tines 50 magnetite crystals 50 fiberglass reinforced 50 irregularly shaped 50 mollusk shells 50 waveguides 50 Corpses riddled 50 epidermal cells 50 indestructible BOB 50 collimators 50 ferro electric 50 hotdog bun 50 hexagonal shapes 50 antiparallel 50 mandibles 50 honeycombs 50 PVC membrane 50 soilless mix 50 MWNT 50 semipermeable membrane 50 diametre 50 Expanded Polystyrene EPS 50 macrocycles 50 molecules 50 CdSe 50 diseased artery 50 coral polyps 50 Cut slits 50 multi celled 50 wire mesh stent 50 boron carbide 50 sterile saline solution 50 cyano 50 silvery scales 50 vestibular nerve 50 resistive element 50 carbon nanofibers 50 femtosecond timescale 50 crustal rocks 50 hawsers 50 graphene ribbons 49 lathed 49 nasal cavities 49 fecal pellets 49 drinking straws 49 whorls 49 wax melts 49 sintered 49 ultrasonic vibration 49 gallium indium arsenide 49 radiator fins 49 circular depressions 49 polymer nanocomposite 49 thermally stable 49 piston rods 49 Knead gently 49 calyx 49 wool fibers 49 rectangular prism 49 myelin sheaths 49 microscopic hairs 49 crushed eggshells 49 lilly pads 49 Nanoshells 49 larvae hatch 49 silicon monoxide