Related by context. Frequent words. (Click for all words.) 60 mouthparts 59 electrically conducting 59 blowholes 58 cylindrical 57 funnel shaped 57 alternating layers 56 tubules 56 tiny pores 56 collagen fibers 56 tubes 55 sacs 55 waxy substance 55 threadlike 55 bilayer 55 fibrous 55 polymer matrix 54 nanometer sized 54 nanospheres 54 polymerized 54 filaments 54 snail shells 54 hydrocarbon molecules 54 actin filaments 54 microchannels 53 pneumatically 53 membranes 53 armatures 53 radially 53 electrochemically 53 SWNTs 53 micelles 53 mesh tubes 53 filamentous 53 micrometre 53 dowels 53 nanosized 53 cm diameter 52 cone shaped 52 flagella 52 nanofibres 52 graphene sheets 52 microstructures 52 polymer coated 52 bamboo skewers 52 microspheres 52 protuberances 52 vacuoles 52 nylon mesh 52 wooden skewers 52 nanotubes 52 zinc oxide nanowires 52 digestive juices 52 irregular shapes 52 manganese oxide 52 millimeter diameter 51 chromophores 51 SWCNTs 51 pectoral fins 51 helices 51 alveoli 51 air sacs 51 microcapsules 51 serrated teeth 51 lobes 51 ureters 51 porphyrins 51 diameters ranging 51 silicon atoms 51 thin walled 51 lattices 51 globules 51 lamina 51 nanoribbons 51 fibrin 51 magnetic beads 51 mussel shells 51 nanoscopic 50 microelectrodes 50 tetrahedral 50 toroidal 50 fibrous tissue 50 outer membrane 50 pinholes 50 globular 50 peritoneal cavity 50 lobed 50 microbubbles 50 honeycomb 50 magnetic particles 50 membrane 50 capillaries 50 irregularly shaped 50 waveguides 50 mandibles 50 honeycombs 50 diametre 50 molecules 49 nasal cavities 49 drinking straws 49 whorls 49 sintered