نتایج جستجو برای: labelling index
تعداد نتایج: 408110 فیلتر نتایج به سال:
BACKGROUND Alterations in epithelial proliferation and apoptosis in colonic mucosa are associated with an increased risk of colon cancer. It is unclear if these alterations represent a generalised "field defect". AIMS To analyse segmental patterns of cell proliferation and apoptosis in the colon of subjects with a high and no apparent risk of colon cancer. METHODS Pancolonoscopy was perform...
A large number of studies applying inhibitors of polyamine biosynthesis have indicated that these compounds are required for animal cell proliferation. Here we show, using a transgenic rat model with activated polyamine catabolism, that a certain critical concentration of the higher polyamines spermidine and spermine is required for liver regeneration. Partial hepatectomy of transgenic rats exp...
AIMS To clarify the significance of apoptosis in the progression of uterine cervical neoplasias, including cervical intraepithelial neoplasia (CIN), microinvasive carcinoma (MIC), and invasive squamous cell carcinoma (ISCC) categories, in relation to cell proliferation and human papilloma virus (HPV) infection. METHODS Forty six cases of CIN I/II, 75 of CIN III, 16 of MIC, and 44 of ISCC were...
At 15, 30 and 60 days after denervation, 10 mice were injected (5 controls, 5 denervated) at each time period with 0.5 @i/gm of C3H]-thymidine. Denervated teeth, after 15 and 30 days, were thinner, shorter and narrower with a chalky-white appearance; by 60 days, the teeth returned to their normal predenervated appearance. The responses of the proliferative compartments of the mouse incisor vari...
We describe a robust approach for linking already existing lexical/semantic hierarchies. We use a constraint satisfaction algorithm (relaxation labelling) to select –among a set of candidates– the node in a target taxonomy that bests matches each node in a source taxonomy. In this paper we present the complete mapping of the nominal, verbal, adjectival and adverbial parts of WordNet 1.5 onto Wo...
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