cause, left, right, small chronic, increased, human, normal acute, severe, induced, increased, include primary relaxes, excessive, selective, specific, including

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squamous metaplasia, epithelium, epithelia, carcinomas, carcinoma, cell, epithelial, mucosaairway hyperresponsiveness, hyperreactivity, obstruction, epithelia, secretions, clearance, inflammation, narrowing, responsiveness, reactivity, constriction, epithelium, epithelial, lumen, occlusion, hyper, closure, mucus, edema, mucosa, smooth, obstructive, irritationtracheal intubation, aspirates, cartilages, aspirate, stenosis, lumen, epithelium, mucosa, secretions, anastomosis, tube, epithelial, cartilage, mucus, tubes, occlusion, obstruction, narrowing, compression, mucous, cuff, aspiration, smooth, tumors, collapse, wallmucus hypersecretion, plugging, secretion, secretions, clearance, glands, liningcarcinoid tumours, tumors, tumorciliated epithelium, epithelial, cellsmalignant neoplasm, tumours, carcinoid, tumors, tumor, lesions, epithelial, lymphoid, squamous, cellssubmucosal glands, edema, gland, tumors, veins, lesions, tissues, tumor, tissue, vesselschronic obstructive, catarrh, inflammation, suppuration, cough, diseases, ailments, lung, asthma, venousaspiration pneumonia, biopsy, biopsiesartery occlusion, stenosis, spasm, anastomoses, anastomosis, disease, constriction, fistulaobstructive airways, lung, airway, lesionsanastomotic stenosis, vein, healing, vessels, branches, branchmucous plugging, secretions, glands, fistula, lining, secretion, cyst, cysts, glandmucosal biopsies, epithelia, lining, edema, epithelium, lymphoid, inflammation, secretions, lesions, biopsy, epithelial, irritation, abnormalities, glands, injury, damage, tissues, congestionmuscle spasms, spasm, relaxes, biopsies, relaxation, biopsy, tone, tissuehypersensitivity reactions, reactiontract infections, infection, obstruction, dilatation, secretionsvascular anastomoses, occlusion, smooth, reactivity, anastomosis, spasm, lesions, congestion, constriction, anatomy, dilatation, disease, dilation, abnormalities, lumen, obstructive, diseasesallergic reactions, reaction, asthma, hypersensitivity, inflammation, diseases, airwaylymphoid tissues, tissue, cells, tumorsvein occlusion, anastomosis, stenosis, obstructionlavage fluidarterial occlusion, anastomoses, spasm, anastomosis, lumen, stenosis, blood, collaterals, constriction, dilation, narrowing, dilatation, circulation, obstructionvenous collaterals, anastomoses, congestion, drainage, occlusion, anastomosis, obstruction, dilatation, constriction, dilation, fistula, blood, circulation, stenosisairways obstruction, responsiveness, inflammation, diseasealveolar lavage, epithelial, mucosa, epithelium, lining, edema, lumen, collapse, wallsrecurrent collaterals, infections, pneumonia, squamous, stenosis, attackscongenital abnormalities, atresia, tracheal, cysts, constriction, stenosissmooth muscle, musculature, musclesepithelial lining, cells, metaplasia, neoplasm, tumours, tumors, cell, cysts, tissues, carcinomas, cyst, tissue, edemadilator muscles, muscleperipheral vascular, edema, lymphoid, arterial, airways, tissues, blood, venous, arteries, circulationlung cancer, lavage, biopsy, carcinomas, carcinoma, biopsies, disease, tissue, injury, tumors, tumours, ailments, diseases, adenomasdistal anastomosis, anastomoses, anastomotic, stump, musculature, airways, segmentgland secretions, adenoma, tumours, tumors, secretion, adenomas, carcinomas, carcinomaenlarged lymph, glandsextrinsic allergic, compression, asthma, muscleslymph glands, vessels, drainage, glandproximal anastomosis, anastomoses, stump, musculature, occlusion, segment, dilatationcell carcinomas, carcinoma, adenoma, metaplasia, tumors, tumours, adenomasepithelium liningbovine tracheal, cartilageselective arteriography, blockercuff musculature, muscles, rupturecollateral circulation, damage, vessels, arteriessegmental arteries, dilatation, narrowing, anatomy, artery, stenosis, arterial, vesselsasthma attacks, attack, symptomsdilated veins, proximal, vesselscyst aspiration, lining, rupture, wall, fluidtree stumpblood vessels, flowupper airwayorifice diameterpersistent cough, asthmafistula closure, tract, drainagelining epithelium, mucosainhalation injury, pneumonia, injuriesrelieve congestionacute inflammation, asthmaleft mainstemcarcinoma squamouslumen narrowing, diameter, tube, tubesnonspecific inflammation, symptoms, complaints, abnormalities, airwaythickened mucosa, alveolar, epitheliumtumor cells, biopsiesright mainstemrelaxes smooth, muscles, vascularaspirate fluidcentral venousbreath soundssevere asthma, allergicmucosa liningmuscles relaxinduced asthmaedema fluidtissue biopsiesexcessive mucus, secretionsdrainage tubespositive airwaydiameter stenosis