Related by context. Frequent words. (Click for all words.) 48 bronchial tubes 47 airways 43 airway inflammation 42 respiratory tract 42 secretions 41 nasal passages 41 artery walls 41 blood vessels 41 capillaries 41 alveoli 40 lungs 40 pharynx 40 airway 40 mucous membranes 40 peripheral nerves 40 clot formation 39 upper airway 39 mucus membranes 39 skeletal muscles 39 thick sticky mucus 39 Lorillard Tobacco Co. 39 prostacyclin 38 Inhaled 38 GI tract 38 nitrosamines 38 nasal passage 37 air sacs 37 epithelium 37 lung tissue 37 decongestants 37 mucus 37 salivary glands 36 bloodstream 36 cell membranes 36 asthma bronchitis 36 nasal cavity 36 tissues 36 sebaceous glands 36 mucous 35 nicotine 35 trachea 35 esophagus 35 clot 35 CFTR 35 inflammation 35 fatty plaque 34 cerebrospinal fluid 34 fatty deposits 34 Lorillard Tobacco 34 atherosclerotic plaque 34 mucosa 34 exhalation 34 soft palate 34 smokeless tobacco 34 sinuses 34 soot particles 34 ducts 33 atria 33 diaphragm 33 menthol 33 nonsmokers 33 snus 33 hypertrophy 33 RJ Reynolds Tobacco 33 Cigarette maker 33 bile ducts 32 COPD 32 sugary foods 32 Philip Morris USA 32 Arteries 32 muscle tissue 32 coughing sneezing 32 gastrointestinal tract 32 sneezing coughing 32 chronic inflammatory 32 arteries 32 clots 32 respiratory distress syndrome 32 milk ducts 32 mucous membrane 32 sugary soft drinks 31 lung 31 carcinogens 31 Coughing 31 Smokeless tobacco 31 smokeless 31 digestive tracts 31 alveolar 31 sweat glands 31 aggressively 31 soft tissues 31 ventricles 31 spinal canal 31 duodenum 31 small intestine 30 inhaled 30 abdominal organs 30 Cigarette makers 30 lung function 30 wintergreen 30 lymphatic