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- W2020796178 abstract "BACKGROUND Various methods of detecting cancer with fluorescence have been developed. One type of fluorescence is based on the tumor-localizing properties of certain dyes. However, the phototoxicity of most known tumor-localizing dyes hinders the safe use of such diagnostic methods. The authors have developed a fluorescence imaging system to detect the distribution of a nontoxic dye, fluorescein, and they have evaluated the feasibility of the system by using it to detect oral dysplastic lesions in hamsters. METHODS Dysplasia was induced in the cheek pouches of hamsters by application of the carcinogen 9,10-dimethyl-1,2-benzantracene. Fluorescein was administered to the hamsters either intravenously or orally before the fluorescence examination. The endoscopic fluorescence system produced dye-distribution images of both treated and control pouches. Two fluorescence images in different spectral regions were processed for each dye image. Biopsy material from both pouches was examined histopathologically. RESULTS The accumulation of fluorescein was detected in 22 of 23 specimens containing dysplastic lesions. CONCLUSIONS These results demonstrate the utility of this fluorescein accumulation method in the detection of dysplasia. The accumulation of fluorescein in dysplastic lesions may point to acidification of interstitial medium in such lesions. Cancer 1999;85:1421–9. © 1999 American Cancer Society." @default.
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- W2020796178 date "1999-04-01" @default.
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- W2020796178 title "Detection of premalignant oral lesions in hamsters with an endoscopic fluorescence imaging system" @default.
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- W2020796178 doi "https://doi.org/10.1002/(sici)1097-0142(19990401)85:7<1421::aid-cncr1>3.0.co;2-n" @default.
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