A foodborne bacterium called Listeria monocytogenes (sometimes found in stinky cheeses) invades the body by binding to a protein called E-cadherin. However, as E-cadherin is normally buried within the junctions between gut cells, and is thus hidden from the cell surface, it’s not clear how the bug gains traction.
In response to Listeria invasion, specialized gut cells called goblet cells produce mucus in an attempt to flush the bacteria away. Scientists in France now find that the reorganization required for goblet cells to expel their slippery product also exposes E-cadherin on their surface, allowing Listeria to grab hold and cause systemic infection.About The Journal of Experimental Medicine
Nikitas, G., et al. 2011. J. Exp. Med. doi:10.1084/jem.20110560
Rita Sullivan | Newswise Science News
Not of Divided Mind
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Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
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