89 results for “Reaction Department”, page 1 of 5
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Medical study · Medical research · 1989
Ultrastructural histochemistry of mesotheliomas and adenocarcinomas in malignant effusions
…along the outer surface of the cell aggregates, while carcinomas displayed a positive reaction either on the outer surface or on both inner and outer surfaces of the clusters. The diagnostic significance of the above-mentioned…
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Medical study · Medical research · 1983
Reaction of rat lungs to inhaled chrysotile asbestos following acute and subchronic exposures
In this animal experiment, Fischer 344 rats breathed chrysotile asbestos from Quebec in inhalation chambers at an average respirable mass of 9.06 plus or minus 1.83 mg/m3. Male rats were exposed for 1 hour, 7 hours, or 7 hours a day for 5 days. Four…
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Medical study · Medical research · 1982
Reaction of cells cultured in vitro to different asbestos dusts of equal surface area but different fibre length
…100 micrograms/tube), surface area (21.3 cm2 or fibre length. In all reactions tested chrysotile was more active than the amphiboles, but the latter gained activity if applied according to surface area. Uptake of 3H…
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Medical study · Medical research · 1983
Reaction of mineral dusts with primary lung fibroblast cultures
This laboratory study, which also reviewed the authors' earlier work, tested nine mineral dusts on rabbit lung fibroblast cultures (collagen-making cells). Single doses of 10 to 1000 µg per culture were added on day 3. DNA and cell-layer collagen…
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Medical study · Medical research · 1984
Pulmonary granulomatous reaction: talc pneumoconiosis or chronic sarcoidosis?
A chronic pulmonary granulomatous reaction was associated with an almost identical clinical picture in two patients exposed to talc. In both patients lung biopsy showed the deposition of talc particles and a heavy granulomatous reaction. At…
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Medical study · Medical research · 1984
Fiber localization and its relationship to lung reaction in rats after chronic inhalation of chrysotile asbestos
…with histologic changes indicating marked epithelial injury. Increased amounts of fibers are also localized in the lung interstitium with continued exposure to asbestos and are associated with a progressive interstitial fibrotic reaction. Following cessation of exposure…
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Medical study · Medical research · 1987
Hydroxyl radical production in the presence of fibres by a Fenton-type reaction
…of people who inhale them. Results in the present study however indicate that these fibres are able to produce hydroxyl radicals in the presence of hydrogen peroxide by a Fenton-type reaction. Since hydroxyl radical is…
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Medical study · Medical research · 1987
Response of mouse lung to crocidolite asbestos. 1. Minimal fibrotic reaction to short fibres
This was an animal experiment from the University of Manitoba, Winnipeg, on how mouse lungs respond to short crocidolite asbestos fibres. The authors separated short fibres from a standard UICC crocidolite sample. These had a mean length of 0.6…
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Medical study · Medical research · 1989
What's new in intraperitoneal test on Kevlar (asbestos substitute)?
The intraperitoneal test is a suitable experimental method for studying the different patterns of morphological reaction to foreign body substances of various kinds and concentrations as well as their transport within and elimination from the organism…
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Medical study · Medical research · 1983
Acute lung response to amosite asbestos: a morphological study
This was an animal experiment in guinea pigs. It examined the lung's reaction during the week after amosite asbestos was placed in the windpipe. Exposed animals received 17.5 mg of ground commercial-grade amosite…
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Medical study · Medical research · 1981
An assessment of the fibrogenic potential of two refractory fibres by intraperitoneal injection in rats
…tissue reaction was compared. Although the fibres differed considerably in surface properties and porosity the tissue reactions were identical and consisted of a mild chronic inflammatory response with a small amount of collagen present. The reaction…
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Medical study · Medical research · 1986
US surgeon general ignites furor with findings on smoking in the workplace
…research study. A freelance writer described the US Surgeon General's December 1985 Smoking and Health report on cancer and chronic lung disease in the workplace, and the reaction to it. According to the article, the…
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Medical study · Medical research · 1988
Progressive lung cell reactions and extracellular matrix production after a brief exposure to asbestos
…this would be the most likely site of a significant cellular or fibrotic reaction. The characteristics and progression of tissue reactions occurring at first alveolar duct bifurcations after a single brief asbestos exposure was defined using…
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Medical study · Medical research · 1988
Formation of 8-hydroxydeoxyguanosine by asbestos and man made mineral fibres
…were compared with chrysotile fibres for their capacity to hydroxylate 2-deoxyguanosine to 8-hydroxydeoxyguanosine, a reaction that is mediated by formation of hydroxyl radicals. All three fibres produced 8-hydroxydeoxyguanosine in the absence of H2O2…
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Medical study · Medical research · 1986
Keratin and epithelial membrane antigen immunoreactivity in nonneoplastic fibrous pleural lesions: implications for the diagnosis of desmoplastic mesothelioma
…EMA stained five of ten plaques and four of 11 lesions. Keratin also stained the fibrous reaction around six of eight metastases. Benign localized fibrous mesotheliomas and 16 fibrous lesions away from the pleura did not…
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Medical study · Medical research · 1987
Immunohistological staining of reactive mesothelium, mesothelioma, and lung carcinoma with a panel of monoclonal antibodies
…but was present in most of the lung carcinomas. CEA seemed to be the single most useful marker in distinguishing carcinoma from mesothelioma in that a positive reaction for CEA would indicate carcinoma rather than mesothelioma.
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Medical study · Medical research · 1987
Evaluation of the K2 asbestos screening test kit
…The kit, marketed as a field test, uses colour reactions to detect magnesium and iron, elements in asbestos minerals. It was tried on 30 building samples previously examined by optical microscopy and on 12 calibration preparations…
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Medical study · Medical research · 1985
Adenomatoid tumor of ejaculatory duct
…stain for two prostate markers, prostate specific antigen and prostate specific acid phosphatase. It showed no reaction for factor VIII antigen. It contained faint focal mucin and some yellowish brown pigment. The authors separated it from…
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Medical study · Medical research · 1985
Malignant mesothelioma and CEA staining
…which is neither tumor- nor organ-specific. The author added that CEA staining results are not valid unless this reaction is first removed by absorbing the antisera with NCA. Earlier reports describing CEA in mesothelioma had…
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Medical study · Medical research · 1986
Gallium scanning in differentiating malignant from benign asbestos-related pleural disease
…no history of exposure. Scans were also positive in 3 of the 16 patients with benign disease (19%), and tissue removed from these three showed a strong inflammatory reaction. Among asbestos-exposed patients, the scan's…