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Sunday, January 4, 2015

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

'Bad luck' of random mutations plays predominant role in cancer, study shows

Posted: 01 Jan 2015 11:23 AM PST

A statistical model has been created that measures the proportion of cancer incidence, across many tissue types, caused mainly by random mutations that occur when stem cells divide. By this measure, two-thirds of adult cancer incidence across tissues can be explained primarily by "bad luck," when these random mutations occur in genes that can drive cancer growth, while the remaining third are due to environmental factors and inherited genes.

Nanotechnology used to engineer ACL replacements

Posted: 30 Dec 2014 10:28 AM PST

A synthetic graft for ACL reconstruction has been developed that integrates with the native bone, promotes growth of new ligament tissue, and stabilizes the knee. Connecting the femur to the tibia, the anterior cruciate ligament (ACL) rupture is one of the most devastating injuries in sports. No other injury has sidelined more athletes for a season or even the rest of a career. And ACL sprains and tears affect more people than just the pros.

A repulsive material: New hydrogel dominated by electrostatic repulsion

Posted: 30 Dec 2014 07:19 AM PST

In a world-first achievement, scientists have developed a new hydrogel whose properties are dominated by electrostatic repulsion, rather than attractive interactions.

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