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701.
The Botanical Review - 相似文献
702.
Effect of Vibriocins on Members of the Enterobacteriaceae 总被引:2,自引:0,他引:2
Certain vibriocin producers exhibited antibacterial activity throughout the Enterobacteriaceae. To examine this phenomenon, an effective technique for demonstrating vibriocin production was developed. 相似文献
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S Nair A Joshi-Saha S Singh R V S Singh V Thorat CP Kaushik S Eapen SF D'Souza 《Journal of biotechnology》2012,161(4):422-428
Phytoremediation is a viable strategy for management of toxic wastes in a large area/volume with low concentrations of toxic elemental pollutants. With increased industrial use of cobalt and its alloys, it has become a major metal contaminant in soils and water bodies surrounding these industries and mining sites with adverse effects on the biota. A bacterial Co-Ni permease was cloned from Rhodopseudomonas palustris and introduced into Nicotiana tabacum to explore its potential for phytoremediation and was found to be specific for cobalt and nickel. The transgenic plants accumulated more cobalt and nickel as compared to control, whereas no significant difference in accumulation of other divalent ions was observed. The transgenic plants were evaluated for cobalt content and showed increased acquisition of cobalt (up to 5 times) as compared to control. The plants were also assessed for accumulation of nickel and found to accumulate up to 2 times more nickel than control. At the same initial concentration of cobalt and nickel, transgenic plant preferentially accumulated cobalt as compared to nickel. The present study is perhaps the first attempt to develop transgenic plants expressing heterologous Co transporter with an improved capacity to uptake cobalt. 相似文献
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706.
Essential trace elements such as iron (Fe) are known to interact with nonessential metals like lead (Pb), influencing its
metabolism. Ferric chloride and lead nitrate were administered intraperitoneally to Swiss albino miceMus musculus singly and successively, with or without a time gap of 1 h, to study the degree of protection, if any, afforded by iron against
the clastogenic effects induced by Pb in bone marrow cells. A decrease in the frequency of lead-induced chromosomal aberrations
was observed when Fe was given together with or prior to Pb administration. 相似文献
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Archana Panikkar Corey Smith Andrew Hislop Nick Tellam Vijayendra Dasari Kristin A. Hogquist Michelle Wykes Denis J. Moss Alan Rickinson Henry H. Balfour Jr. Rajiv Khanna 《Journal of virology》2015,89(17):9137-9141
Here we present evidence for previously unappreciated B-cell immune dysregulation during acute Epstein-Barr virus (EBV)-associated infectious mononucleosis (IM). Longitudinal analyses revealed that patients with acute IM have undetectable EBV-specific neutralizing antibodies and gp350-specific B-cell responses, which were associated with a significant reduction in memory B cells and no evidence of circulating antibody-secreting cells. These observations correlate with dysregulation of tumor necrosis factor family members BAFF and APRIL and increased expression of FAS on circulating B cells. 相似文献