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排序方式: 共有158条查询结果,搜索用时 31 毫秒
1.
Florence Levy-Favatier Lydie Tichnonicky Jacques Kruh Marc Delpech 《Biochimie》1989,71(11-12):1157-1161
We have previously described in rat liver two protein kinases tightly bound to DNA, one is serine-specific, the other arginine-specific. In this work we show that both enzymes are present in various rat tissues and in liver from various species. Both kinase specific activities are strongly decreased in methyl-DBA-induced hepatomas and in HTC cells but not in regenerating liver after hepatectomy. This decrease is then not related to cell proliferation. 相似文献
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Summary The use of reticulated polyurethane foam as a support material for the immobilization of methanogenic associations and its application to the anaerobic treatment of fine particulate solid wastes was investigated. The colonization of polyurethane support particles in a continuous upflow reactor fed on a mixture of acetate, propionate and butyrate, was both rapid and dense. The combination of rumen microorganisms and colonized support particles in a two-phase digester resulted in an efficient anaerobic decomposition of papermill sludge. 相似文献
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Increased expression of the N-myc gene during normal and neoplastic rat liver growth 总被引:6,自引:0,他引:6
M Corral B Paris C Guguen-Guillouzo D Corcos J Kruh N Defer 《Experimental cell research》1988,174(1):107-115
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Cellular sterol content and sterol metabolism were studied in diploid human kidney cells in early passages in culture. Cholesterol, the main cellular sterol, was present at levels similar to those reported for other cultured mammalian kidneys. Cholesterol biosynthesis was characterized by a slow conversion of sterol precursors with accumulation of lanosterol and 27 carbon-atom sterols. In the absence of exogenous cholesterol, kidney cells grew slowly and intracellular cholesterol decreased; however, sterol formation from labelled acetate was stimulated. These results suggest that the cholesterol concentration in the culture medium influences the rate of sterol formation by the kidney cell. Furthermore, cholesterol appears to be essential to cultured human kidney and de novo synthesis by the cells in culture is not adequate to meet their requirements for growth. 相似文献
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Roeland van Wijk Lydie Tichonicky Jaques Kruh 《In vitro cellular & developmental biology. Plant》1981,17(10):859-862
Summary Exposure of HTC cells to sodium butyrate caused inhibition of growth. The site of growth inhibition was studied by time-lapse
cinematography and [3H]thymidine incorporation studies. Evidence is presented that sodiunm butyrate affected the cell cycle at a specific point
immediately after mitosis. Inasmuch as it does not modify the interphase duration after its removal, butyrate may be used
for HTC synchronization.
This work was supported by l'Institut Nationale de la Santé et de la Recherche Médicale and la Centre Nationale de la Recherche
Scientifique (L. T. and J. K.). 相似文献
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