منابع مشابه
Bacterial natural transformation by highly fragmented and damaged DNA.
DNA molecules are continuously released through decomposition of organic matter and are ubiquitous in most environments. Such DNA becomes fragmented and damaged (often <100 bp) and may persist in the environment for more than half a million years. Fragmented DNA is recognized as nutrient source for microbes, but not as potential substrate for bacterial evolution. Here, we show that fragmented D...
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DNA is the fundamental material that stores and passes genetic information from one generation to the next. How ever, DNA is subject to spontaneous hydrolysis of the phosphodiester, N glycosidic, and amino bonds, and DNA is exposed to constant attack by oxygen based free radicals that damage the nucleobases and sugar backbone as well as to ultraviolet (UV) light. The resulting DNA lesions prese...
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Summan Previous cross-sectional data suggest a positive association between serum cholesterol and brain neoplasms. but the results of cohort studies are inconclusive. There is evidence that in women the growth of meningiomas and astrocytomas depends on the hormonal status. The present investigation comprised data on serum cholesterol and P-lipoprotein concentration among 229 participants in a h...
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Regenerative medicine, deals with functional reconstruction of damaged tissues or organs after severe injuries chronic diseases, while body's natural responses are not sufficient. In this field, stem cells due to their exclusive potential in self-renewal and differentiation into other cell types, are the main sources of functional cells in regenerative medicine. However, challenges in stem cell...
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Our goal in writ ing “Dam aged Mer chan dise?” (DM) was not to have the last word on the sub ject but to raise an aware ness within the hu man–com puter in ter ac tion (HCI) com mu nity of is sues that we felt had been too long ig nored or ne glected. On read ing the 10 com men tar ies from dis tin guished mem bers of the HCI com mu nity, we were pleased to see that they had joined the de bate ...
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ژورنال
عنوان ژورنال: Diagnostic and Interventional Imaging
سال: 2013
ISSN: 2211-5684
DOI: 10.1016/j.diii.2012.05.015