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Shigella


Shigella boydii
Shigella dysenteriae
Shigella flexneri
Shigella sonnei Shigella are Gram-negative, nonmotile, nonsporeforming rod-shaped bacteria. They are pathogens of humans and other primates, causing shigellosis. Depending on age and condition of the host, as few as 10 cells can be enough to cause an infection. The disease is caused when virulent Shigella organisms attach to, and penetrate, epithelial cells of the intestinal mucosa. After invasion, they multiply intracellularly, and spread to contiguous epitheleal cells resulting in tissue destruction. Some strains produce enterotoxin and Shiga toxin (very much like the verotoxin of E. coli O157:H7).


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(Date:9/16/2014)... Keystone XL pipeline (KXL) would likely increase oil sands ... surveyed by the non-profit organization Near Zero. The results ... Impact," and includes both supporters and opponents of the ... sands could lead to significantly higher greenhouse gas emissions, ... respond. , "This report examines three main scenarios ...
(Date:9/16/2014)... Spain culminating the around the world of the Malaspina ... the global ocean works and what is its health ... is not limited to coastal areas, but also occurs ... it is already affecting the ocean ecosystem. ,This and ... for Researchers in Barcelona, in a congress that ends ...
(Date:9/16/2014)... If Scotland votes for independence later this week, its ... Scottish people that fracking is necessary, research has revealed. ... been tracking public perception of shale gas extraction in ... people living north of the border are the least ... the research in the University,s School of Geography, said: ...
Breaking Biology News(10 mins):Keystone XL would likely raise oil sands production and greenhouse gas emissions 2The Malaspina Expedition confirms that pollution reaches even the most remote areas of the ocean 2The Malaspina Expedition confirms that pollution reaches even the most remote areas of the ocean 3Scottish people most sceptical on fracking, survey shows 2Scottish people most sceptical on fracking, survey shows 3
... than at any time in the previous 1,500 years, a ... Nature Geoscience . The rise in temperature ... productivity of the lake, which hosts the second-largest inland fishery ... fish from Lake Tanganyika as a crucial source of protein," ...
... Ind. - Using NASA satellite data and Google Earth, ... North Korea has been logging in what is designated ... Shao, professor of geo-eco-informatics, studies the Mount Paekdu Biosphere ... many researchers are unable to visit North Korea, Shao ...
... from the Virginia Bioinformatics Institute (VBI) at Virginia Tech ... crops in developing countries from devastating attacks from plant ... from the BREAD (Basic Research to Enable Agricultural Development) ... the Bill & Melinda Gates Foundation (BMGF). VBI ...
Cached Biology News:Twentieth-century warming in Lake Tanganyika is unprecedented 2Twentieth-century warming in Lake Tanganyika is unprecedented 3NASA, Google data show North Korea logging in protected area 2Plant protection research targets cacao in developing countries 2
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