Related by context. Frequent words. (Click for all words.) 50 microchannels 50 molten rock 48 magma 47 magma chamber 46 capillaries 46 alveoli 45 tiny pores 44 vesicle 44 digestive juices 44 cell membrane 44 artery walls 44 carbonic acid 44 microbubbles 43 coffer dam 43 fibrous tissue 43 lava dome 43 calcium ions 43 tubules 42 chest cavity 42 ionized gas 42 combustion chambers 42 pores 42 microcapsules 42 membrane 41 hydrogen ions 41 graphene sheets 41 crystal lattice 41 lithium ions 41 fatty deposits 41 collagen fibers 41 bronchial tubes 41 superheated gases 41 lower esophageal sphincter 41 thick mucus 41 blood vessels 41 gaseous hydrogen 41 excitons 41 Earth magnetosphere 41 capping stack 41 micelles 40 outer membrane 40 amniotic sac 40 accretion disk 40 superheated steam 40 capillary 40 uterine wall 40 liquid droplets 40 cofferdam 39 pleura 39 cavern 39 nasal cavity 39 disposable cartridge 39 diaphragm 39 bilayer 39 mandrel 39 cell membranes 39 lymphatic vessels 39 Southerly winds 39 sodium ions 39 heliosphere 39 nanopore 39 air sacs 38 reactants 38 cavity 38 radially 38 urethra 38 thermocline 38 desorption 38 magnetosphere 38 atherosclerotic plaques 38 outermost layer 38 bd.className = bd.className.replace overflow 38 vortices 38 nanospheres 38 biomolecule 38 salt crystals 38 liposome 38 membranes 38 nanotube 38 reservoir 38 ear canal 38 baseplate 37 hydrostatic pressure 37 continental crust 37 chimney flue 37 outer layers 37 tiny droplets 37 dopants 37 elastin 37 seams 37 heliosheath 37 impeller 37 fibrin 37 tendril 37 microparticles 37 superfluid 37 GPa 37 dye molecules 37 oxidizes 37 flange 37 bronchi