Related by context. Frequent words. (Click for all words.) 48 pinhead sized 46 Microscopic 45 microscope slides 45 microscopic 44 formalin fixed 44 Tiny particles 43 magnifying lenses 43 Ingested 43 force microscopy AFM 43 nanometers billionths 43 hollow tube 42 Tissue samples 42 Protruding 42 scanning tunneling microscope STM 42 esophagus stomach 42 biopsy needle 41 microdots 41 silver nitrate 41 scanning electron microscope SEM 41 ultrasonic waves 40 nanoprobes 40 needlelike 40 ziplock bags 40 fingernail clippings 40 suctions 40 5mm thick 40 detect abnormalities 40 Scribbled 40 microfabricated 39 scanning electron microscopes 39 Taken miscellaneous 39 tiny specks 39 nanoparticles coated 39 wirelessly transmits 39 micrometre 39 fluorescence microscope 39 DNA deoxyribonucleic acid 39 document.getElementById root root 39 gauge shotgun shells 38 fragments 38 hollow tubes 38 silica nanoparticles 38 Affixed 38 fluorescently labeled 38 squirt bottles 38 seashells 38 insertable 38 micrographs 38 thumbnail sized 38 retrieved 38 containing 38 concretions 37 encrustation 37 harden plastics 37 barcoded 37 naturally occuring 37 nanosized 37 nanoshell 37 Urine samples 37 vial containing 37 SSRL 37 radiofrequency waves 37 mussel shells 37 Venus flytraps 37 mercury cadmium 37 Staphylococcus aureus bacteria 37 Carbon nanotube 37 magnetic beads 37 gastrointestinal tracts 37 metabolome 37 elemental composition 37 otoliths 37 millimeter 37 Unscrew 36 chemical mixtures 36 flatworms 36 snail shells 36 scanning electron microscopy 36 polymer beads 36 computed tomography CT scans 36 americium 36 canister containing 36 scanning electron microscope 36 greenish brown 36 gallbladders 36 involves implanting 36 collected 36 nanometers thick 36 isotope ratios 36 x ray beam 36 mottled brown 36 surf clams 36 micrograph 36 cartridge casings 35 micrometres 35 crayons pencils 35 detonator cord 35 laser engraved 35 tiny particles 35 abdomen pelvis 35 chemically bonded