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(Click for frequent words.) 68 spatulae 64 microscopic hairs 62 tubercles 62 hairlike structures 62 gecko toes 61 coral polyps 61 collagen fibers 60 cadherins 60 hairlike 60 rootlets 60 lamellae 59 hind wings 59 mouthparts 59 gecko hairs 58 laminae 58 Linhenykus 58 bony plates 58 single celled algae 58 bony armor 58 van der Waals forces 58 hyphae 58 ovipositor 57 amphioxus 57 pectoral fins 57 pelvic fins 57 scutes 57 vibrissae 57 interfacial 57 motile 57 blubber layer 57 bony structures 57 barbels 56 plastron 56 keratin protein 56 AFM cantilever 56 spicule 56 microvilli 56 hindlimbs 56 membrane pores 56 filaments 56 cnidarians 56 nacre 56 condyle 56 radula 56 pelvic fin 55 trabeculae 55 calcite crystals 55 filamentous 55 helices 55 filopodia 55 foraminifera 55 needlelike 55 hydrophobicity 55 waxy coating 55 microcracks 55 chordates 55 collagen molecules 55 disulfide bridges 55 premolar 55 forewings 55 egg sacs 55 intermolecular forces 55 dorsal spines 55 springiness 55 Ichthyostega 55 ostracods 55 stereocilia 55 unbranched 55 papillae 55 springtails 55 squamous cells 55 tunicates 55 epithelial layer 54 microfibers 54 van der Waals 54 keratins 54 motile cilia 54 elastic fibers 54 ciliates 54 periosteum 54 collagen fibrils 54 wormlike 54 fingerlike projections 54 bilaterally symmetrical 54 nanorod 54 ultrasonic vibrations 54 spiders scorpions 54 hydrophobic surfaces 54 surfactant molecules 54 nanopillars 54 coralline algae 54 neural crest cells 54 keratin 54 resilin 54 purplish brown 54 tracheae 54 myelin sheaths 54 submicrometer 54 lamellar 54 multi celled 54 dye molecules 54 dorsal spine 54 sciatic nerves 54 adhesiveness 54 erectile tissue 54 micelles 54 Epithelial cells 54 cartilaginous 54 anionic 54 planaria 54 hind paw 53 cortical neurons 53 invertebrate animals 53 monolayers 53 titin 53 forelimb 53 olfactory receptors 53 Pollen grains 53 posteriorly 53 protein filaments 53 graphene sheet 53 microscopic pores 53 tholins 53 pigment particles 53 gill rakers 53 ciliated 53 protrusions 53 chitons 53 wingless insects 53 nestmates 53 lipid molecules 53 polymer beads 53 gill slits 53 inchworm 53 silicon atoms 53 polymer nanofibers 53 hexagonal lattice 53 diffraction grating 53 DNA strands 53 pigment granules 53 nanobelts 53 fibrin fibers 53 nanoribbon 53 cambium layer 53 spider silk 53 sulci 53 scent glands 53 amyloid fibrils 53 hemolysin 53 outer sheath 53 sensory receptors 53 serrated teeth 53 nanochannels 53 Acanthostega 53 epidermal cells 53 hairlike projections 53 compressive stress 53 unicellular organisms 53 ray florets 53 masseter 53 spaghetti noodle 53 forelimbs 52 waxy substance 52 calcium carbonate shells 52 ssDNA 52 crocodilians 52 sphagnum 52 nanolayers 52 microfilariae 52 RNA fragments 52 osteocytes 52 poly ethylene glycol 52 tetramer 52 mandibles 52 flagella 52 strontium titanate 52 elongated snout 52 fin rays 52 interconversion 52 resorb 52 sandcastle worm 52 Wnt proteins 52 mycelia 52 intramolecular 52 integument 52 oviducts 52 bony growths 52 otoliths 52 hind limbs 52 mollusk shells 52 cambium 52 conodonts 52 somites 52 winged ants 52 epithelial tissues 52 lucidum 52 spongy tissue 52 snail shells 52 fibers 52 polymer fibers 52 outer layer 52 tetrapods evolved 52 sepal 52 punctate 52 trichomes 52 dermatophytes 52 collagen matrix 52 evolutionary lineage 52 root nodules 52 downy feathers 52 striated muscle 52 cortical bone 52 F actin 52 fibrous protein 52 protozoan 52 basilar membrane 52 bird beak 52 morphologically 52 tubules 52 amyloid peptides 52 RNA strands 52 dorsum 52 dentinal 52 palps 52 spherical particles 52 polydimethylsiloxane 52 crinoids 52 actin filaments 52 electrical impedance 52 granulosa 52 hyoid 52 intermediate filaments 52 Young modulus 52 stickleback 52 hexagonal pattern 52 theropod 52 Caulobacter crescentus 52 microstructures 52 caudal fin 51 threadlike 51 SWNTs 51 baleen 51 stretchability 51 sensory organs 51 chemically bonded 51 maxillary palps 51 spinneret 51 fibrils 51 olfactory neurons 51 tensile stress 51 cementum 51 lubricin 51 fungal hyphae 51 magnetic tweezers 51 forked tails 51 retinal neurons 51 nonmagnetic 51 nanodroplets 51 sulcus 51 microscopic single celled 51 Vespula 51 midrib 51 fibrin clot 51 spermatic cord 51 polyethylene fibers 51 streptavidin 51 ectoderm 51 tiny single celled 51 bilayers 51 Sinosauropteryx 51 corals sponges 51 periosteal 51 crystallins 51 Adelgids 51 crosslinks 51 Dhinojwala 51 tubercle 51 fibril 51 fossa 51 mesenchyme 51 cuticular 51 focal adhesions 51 whorled 51 hollow fibers 51 bdelloid rotifers 51 nanopatterned 51 magnetic particles 51 exudates 51 maxillary 51 jellylike 51 Meachen Samuels 51 microlenses 51 unicellular algae 51 cilia 51 planarian 51 hyaline 51 pelvic girdle 51 microhabitats 51 polypeptide chain 51 melanosomes 51 morphology 51 hind flippers 51 covalent bond 51 threespine sticklebacks 51 cranial bones 51 graphene layers 51 adventitious roots 51 jointed legs 51 Prototaxites 51 hind fins 51 toothless beak 51 frass 51 emergent vegetation 51 symbiotic bacteria 51 Tianyulong 51 gill plates 51 carbon nanotube bundles 51 rotifer 51 membranous 51 sensory organ 51 fibrin 51 silicon nanowire 51 anal fin 51 nanoporous 51 bryozoans 51 silica nanoparticles 51 hyaline cartilage 51 piercing sucking mouthparts 51 menisci 51 pinhead sized 51 dimensional scaffold 51 gecko 51 fingerlike 51 protuberances 51 torosaurus 51 serrations 51 lipid membrane 51 pleura 51 nanofibres 51 endocasts 51 biological molecules 51 dermal papilla cells 51 snail shell 51 filamentary 51 micrometer scale 51 trabecular bone 51 rubidium vapor 51 mesothelial cells 51 oppositely charged 51 Garter snakes 51 echinoderms 51 bony prominences 51 hydrophobic molecules 50 axons 50 curved claws 50 osseointegration 50 papilla 50 myosin VI 50 venom gland 50 hydroxyapatite 50 spinnerets 50 poly L lysine 50 fibrous tissues 50 metazoans 50 P. boisei 50 spinal cysts 50 echidnas 50 epicardium 50 whiplike 50 microcantilever 50 mouse ESCs 50 silica spheres 50 upper incisors 50 dragonfly larvae 50 Stellacci 50 tropomyosin 50 membranes 50 multiwalled carbon nanotubes 50 stromal 50 abscission layer 50 wettable 50 alpha hemolysin 50 biodegradable scaffold 50 sengi 50 PIP2 50 dorsally 50 osteophytes 50 unicellular 50 nanotubes 50 hominoids 50 anthers 50 sea squirts 50 spindle fibers 50 ionized molecules 50 musk turtle 50 deer antler bone 50 poison glands 50 cobalt atoms 50 Wnts 50 sessile 50 interdigital 50 synthetic polymers 50 arthropods 50 dinoflagellates 50 webbed toes 50 covalent bonds 50 multi walled nanotubes 50 tardigrades 50 sensory hairs 50 bodily tissues 50 Castorocauda 50 multipotent stem cells 50 dendrites 50 viscoelasticity 50 midgut 50 dielectric layers 50 honeycomb pattern 50 basal layer 50 otolith 50 striations 50 spicules 50 bilayer 50 Schottky barrier 50 zinc oxide nanowires 50 hydrophilic polymer 50 mesenchymal cells 50 cobalt atom 50 arthropod 50 medaka 50 hollow spheres 50 nanometric 50 fruitflies 50 Osedax 50 honeycomb structure 50 epithelial cells 50 exoskeletons 50 underground burrows 50 ruddy turnstone 50 collagenous 50 Clumping 50 theropod dinosaur 50 hemoglobin molecules 50 flexor tendons 50 lance shaped 50 stubby legs 50 nanowires 50 nanosilver particles 50 hairs 50 single celled yeast 50 van der Waals interactions 50 hollow cavity 50 membrane lipids 50 crystallites 50 carbonate globules 50 anal fins 50 venomous spines 50 neuronal pathways 50 decaying vegetation 50 dermal tissue 50 colloidal crystals 50 spikelets 50 lipid membranes 50 ferroelectricity 50 Pierolapithecus 50 metalloproteases 50 nanocages 50 gumline 50 froglets 50 graphene sheets 50 meshwork 50 fat globules 50 condyles 50 semicircular canals 50 fluorescently tagged 50 concentrically 50 spectrin 50 supramolecular 50 medially 50 dentine 50 fungus gnat 50 hydrogel 50 antigenic epitopes 50 gingiva 50 luminal surface 50 flatworms 50 alpha helical 50 actin binding 50 parasitic insects 50 polydimethylsiloxane PDMS 50 silk threads 50 cavefish 50 yardangs 50 steric 50 silvery scales 50 chromophores 50 recurved 50 sexually dimorphic 50 bony protrusions 50 cell nuclei 50 crystal lattices 50 anemone 50 micropores 50 myelin fatty substance 50 lightly pigmented 50 fluorescence intensity 50 Confuciusornis 49 nanotube 49 subcellular compartments 49 dsRNA 49 chlorophyll molecules 49 granulomas 49 receptor molecules 49 substrate 49 sticky sap 49 jaw muscles 49 biocompatible material 49 intervertebral discs 49 magnetic beads 49 sapwood 49 actin fibers 49 cushioned insoles 49 membrane 49 barbed stinger 49 Bearded dragons 49 compressive strain 49 anteriorly 49 undersurface 49 cartilages 49 DNA helix 49 radially 49 microfibres 49 Si substrate 49 bony ridges 49 infarcted myocardium 49 desmosomes 49 osteoconductive 49 Millipedes 49 limbal 49 semiconducting properties 49 GaN layers 49 tarsal 49 stretchiness 49 fall webworms 49 ichthyosaurs 49 carbon nanotube composite 49 crosslinking 49 Manduca sexta 49 tubelike 49 thiols 49 nematode worm 49 woody stems 49 humectants 49 Heterodontosaurus 49 common housefly 49 coated nanoparticles 49 amyloids 49 amino acid residues 49 evolutionary relatedness 49 nanoneedle 49 funnel webs 49 PancakeCroc 49 orb webs 49 vocal folds 49 optic lobes 49 backboned animals 49 tufts 49 mycelium 49 protein fragment 49 stubby limbs 49 annelid worms 49 ulcerate 49 nucleases 49 nanometers billionths 49 hydrogel polymer 49 protein complexes 49 coiled coil 49 marrow cavity 49 photonic crystal 49 trophoblasts 49 nanoscopic 49 salps 49 single celled microbes 49 adhesion proteins 49 SWCNT 49 fibroblast cells 49 nanosheets 49 podocytes 49 viscoelastic properties 49 ear tufts 49 lipofuscin 49 jointed limbs 49 biofilm bacteria 49 myelin sheathing 49 cottony masses 49 globular proteins 49 gill arches 49 neurites 49 uniaxial 49 silica particles 49 ectodermal 49 crinoid 49 silkworm silk 49 symbioses 49 spiracles 49 fatty tissue 49 alternating layers 49 dense mats 49 fruiting bodies 49 circumferentially 49 Chlamydomonas 49 eyespots 49 elongated necks 49 electrical conductance 49 distally 49 femora 49 awns 49 fibrin gel 49 chiton 49 trimers 49 mechanoreceptors 49 montmorillonite 49 outer membranes 49 Fungal spores 49 macroscopically 49 incisor teeth 49 fibrous connective tissue 49 curly tails 49 graphene membranes 49 chromosomal DNA 49 cloacal 49 deformability 49 magnesium ions 49 flower panicles 49 boron nitride nanotubes 49 interatomic 49 birdlike dinosaur 49 hemolymph 49 genetically reprogrammed 49 refractive indices 49 pericytes 49 coral skeletons 49 coral polyp 49 ganglion cells 49 phenotypically 49 blastema 49 dura mater 49 notochord 49 hairless mice 49 mucous lining 49 dentin 49 polymeric 49 mesothelium 49 beta amyloids 49 Anomalocaris 49 fearsome predator 49 footpads 49 adsorbate 49 Spitzer infrared spectrograph 49 elastic deformation 49 Galapagos penguins 49 hind limb 49 cone photoreceptors 49 solitons 49 umbilical vein 49 ropelike 49 trophoblast cells 49 Ubx 49 rearfoot 49 porphyrins 49 actin filament 49 wool fibers 49 nuchal 49 leaf axils 49 circularly polarized light 49 Slime molds 49 morphogens 49 palmate 49 enzyme collagenase 49 corrugations 49 glycan 49 microscopic mites 49 dimer 49 axon guidance 48 hind paws 48 epididymal 48 ossicles 48 bony protrusion 48 axons nerve fibers 48 stainless steel mesh 48 vacuoles 48 regrows 48 morphogen 48 scanning tunneling microscope STM 48 placental mammals 48 viscous fluid 48 single celled bacteria 48 abnormal prion 48 nanometers thick 48 Fig. 3b 48 parasitize 48 chromophore 48 extracellular matrix ECM 48 nanocomponents 48 spheroidal 48 sparrow sized 48 conspecifics 48 optically transparent 48 ciliary body 48 morphological evolution 48 lobate 48 pteropod 48 nanoribbons 48 fibrillin 48 calcite 48 Gunk dripping 48 marine invertebrate 48 controllably 48 oak galls 48 bilaterians 48 sea anemones corals 48 trabecular 48 ribozyme 48 gracile 48 SWNT 48 isotope ratios 48 zipper cavity 48 nanostructure 48 bipedally 48 staghorn 48 Bose Einstein Condensate 48 auditory nerve fibers 48 calcium hydroxyapatite 48 lithosphere 48 electrospun 48 cultured neurons 48 GAGs 48 dorsal fins 48 copepods 48 multicellular organisms 48 unpaired electrons 48 protozoans 48 Anatomically 48 diamondback rattlers 48 diamagnetic 48 adipose cells 48 whorls 48 aragonite 48 cysteines 48 flexural 48 terrestrial mammals 48 helical structures 48 swim bladders 48 villi 48 polymer membrane 48 hemoglobins 48 Cancerous tumors 48 sea anemone 48 eyebrow hairs 48 spherical nanoparticles 48 epitaxially 48 hair cuticle 48 tiny capillaries 48 fibronectin 48 nanoprobes 48 forked tail 48 cardiac myocytes 48 optical vortices 48 amphipods 48 fruitfly Drosophila 48 microcapsules 48 tobacco hornworm 48 self assembled monolayers 48 mesoderm 48 protists 48 mammillary bodies 48 1m 3ft 48 bdelloids 48 microbead 48 capillary tubes 48 subcutaneous layer 48 planktonic 48 bee stingers 48 X ray diffraction pattern 48 roughening 48 cuticle layer 48 zona pellucida 48 meristems 48 mud dauber 48 frog tadpoles 48 lollipop shaped 48 neurite 48 Organic mulches 48 nucleus pulposus 48 coccolithophores 48 mitochondrial membranes 48 GFP fluorescence 48 μm thick 48 eccrine glands 48 nanodots 48 nanobubbles 48 fluorescent molecules 48 fibrin clots 48 dragline silk 48 exciton 48 A. ramidus 48 AlN layer 48 polyurethane coating 48 CD1d 48 primary cilia 48 endospores 48 polypropylene fibers 48 hornworm 48 tarsus 48 dwelling organisms 48 telogen phase 48 elastic modulus 48 papillomas 48 roundworms 48 auditory neurons 48 multicellular 48 lipid bilayer 48 disulfide bond 48 angstroms 48 enzyme horseradish peroxidase 48 excitons 48 bladelike 48 plasmodium 48 marine invertebrates 48 MMP# 48 caveolae 48 Xenopus laevis 48 artiodactyls 48 shallow depressions 48 protein actin 48 cancellous bone 48 Platynereis 48 colloidal particles 48 flatworm 48 corneal cells 48 nanosized 48 meadow vole 48 dromaeosaurid 48 sulfur atom 48 balloonlike 48 isopods 48 fibroblasts 48 pupal 48 predatory insects 48 polyethylene glycol PEG 48 nerve cells 48 globular 48 Raman scattering 48 micrometer sized 48 rib cages 48 lubricating fluid 48 epitaxial layer 48 Dictyostelium 48 microelectrode 48 echogenicity 48 amyloid proteins 48 stinging tentacles 48 air sacs 48 anagen phase 48 lobed 48 exclosure 48 nonvenomous snake 48 single walled nanotubes 48 normal prion proteins 48 thatch layer 48 woody vines 48 microscopic beads 48 epiblast stem cells 48 hexamers 48 gooney birds 48 granulation tissue 48 nanofibers 48 internodes 48 fecal pellets 48 flatfishes 48 nerve fibers 48 nanotubes nanowires 48 philtrum 48 polymerizes 48 Hox gene 48 horsetails 48 vortices 48 sporozoites 48 neurones 48 ribonucleic acid RNA 48 disulfide bonds 48 semipalmated sandpipers 48 scaly skin 48 articular surfaces 48 ramidus 48 cuticle 48 donor acceptor 48 annelid 48 crabs snails 48 spiny 48 magnetopause 48 FIRAT 48 whorl 48 proteinaceous 48 microscopic capsules 48 Darwin finches 48 archosaurs 48 microelectrodes 48 crosslink 48 Scar tissue 48 fluorescent probes 48 pectoral fin 48 leaf litter 48 stent struts 48 daddy longlegs 48 vinculin 48 curved beak 48 petrified tree trunks 48 stratum corneum 48 primordia 48 periodontal ligament 48 lacrimal gland 48 canine teeth 48 extracellular matrix 48 microbeads 48 explants 48 bile salts 48 oligomer 48 ribbonlike 48 gastropod 48 Lymph nodes 48 tissue ingrowth 48 jellylike substance 48 vimentin 48 termite mounds 48 olfactory receptor cells 48 prehensile tails 48 bony prominence 48 Dictyostelium discoideum 48 magnetic bead 48 vertebrate 48 serrated edges 48 agarose 48 sedimentary layers 47 organisms 47 water striders 47 synthetic gecko 47 pterosaurs 47 crossbar latches 47 clumps 47 magnetosomes 47 eusocial 47 intermolecular 47 enterocytes 47 synthases 47 knifefish 47 paramecia 47 Hair follicles 47 macroscale 47 snails clams 47 prokaryote 47 telomeric 47 undifferentiated stem cells 47 baleen plates 47 antibody antigen 47 tectum 47 single celled 47 lamella 47 Bruch membrane 47 silicone rubber 47 dorsal fin 47 crystalline lens 47 fibrocartilage 47 amnion 47 lordosis 47 bacterial biofilm 47 polymer scaffolds 47 hollow tubes 47 epithelia 47 killifish 47 platypuses 47 macromolecules 47 molts 47 ant colonies 47 electrostatically 47 abscission 47 soluble proteins 47 syrinx 47 penile spines 47 connective fibers 47 vesicle 47 rubbery polymer 47 superparamagnetic 47 fungal spores 47 EVA midsole 47 mammalian brains 47 callosities 47 dimpling 47 nanoscale particles 47 chlorosomes