Cold-Loving Bacteria Can Survive in the Ice

UV Photolysis of Amino Acids in Water Ice: How Long Can They Survive on Europa?

We report the rate of decomposition by ultraviolet photolysis of 4 simple amino acids in a ~mm-thick crystalline water ice matrix at T=100K to constrain the surviv-ability of these important organic molecules within ice lying near the surfaces of outer solar system bodies. As a specific example, we focus on Europa where subsurface liquid water or " warm ice " may be extruded onto the surface fr...

Can England's NHS survive?

n engl j med 369;1 nejm.org july 4, 2013 1 a crisis that can be resolved only by altering the fundamental principle on which it was founded — provision of funding from general taxation, with care being free at the point of use. Although the criticism was sparked by a February report on an inquiry into shortcomings at one hospital,1 the problems originated in 2010, when two profound forces were ...

Can the generalist survive the 21st century?

Mesenchymal stem cells can survive on the extracellular matrix-derived decellularized bovine articular cartilage scaffold

Objective (s): The scarcity of articular cartilage defect to repair due to absence of blood vessels and tissue engineering is one of the promising approaches for cartilage regeneration. The objective of this study was to prepare an extracellular matrix derived decellularized bovine articular cartilage scaffold and investigate its interactions with seeded rat bone marrow mesenchymal stem cells (...

Can cognition survive heart surgery?

In this issue of Circulation, Jensen et al 1 report that cognitive difficulties were no fewer when off-pump (OPCAB) versus conventional (CCAB) coronary artery bypass grafting was used. This important investigation, a substudy of the Best Bypass Surgery Trial, is a randomized prospective controlled trial that compares OPCAB with CCAB. Although the numbers seem relatively small (ie, 120 elderly p...