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Materials Science May 18, 2016

Harnessing engineered slippery surfaces for tissue repair

Transplanting a preformed dense and coherent sheet of regenerative stem cells directly onto damaged heart, cartilage or bone tissue of ailing patients often is a more promising route to recovery than transplanting the cells ...

Polymers May 17, 2016

Dynamic DNA polymers can be reversed using biocompatible techniques

DNA-based straight and branched polymers or nanomaterials that can be created and dissolved using biocompatible methods are now possible thanks to the work of Penn State biomedical engineers.

Materials Science May 4, 2016

A better bone replacement: 3-D printed bone with just the right mix of ingredients

To make a good framework for filling in missing bone, mix at least 30 percent pulverized natural bone with some special man-made plastic and create the needed shape with a 3-D printer. That's the recipe for success reported ...

Bio & Medicine Apr 8, 2016

Dressed to kill: Tailoring a suit for tumor-penetrating cancer meds

For more than a decade, biomedical researchers have been looking for better ways to deliver cancer-killing medication directly to tumors in the body. Tiny capsules, called nanoparticles, are now being used to transport chemotherapy ...

Plants & Animals Apr 8, 2016

Discovery and synthesis of AMOR sugar chains that guide pollen tube growth

A group of scientists at Nagoya University has succeeded in discovering AMOR, a sugar chain molecule that increases the fertilization efficiency in plants. AMOR was found to be responsible for activating pollen tubes to lead ...

Cell & Microbiology Mar 16, 2016

Bacteria's social media

Perhaps when you think of bacterial communities you think of a flask full of rapidly dividing E. coli. But in non-lab conditions, bacteria grow in complex, heterogeneous communities composed of diverse microscopic organisms. ...

Biochemistry Mar 15, 2016

Phosphonate emerging zinc binding group in matrix metalloproteinase inhibitors

Matrix metalloproteinases (MMPs) are zinc-dependent endopeptidases, responsible for the degradation of the extracellular matrix (ECM). Their involvement has been demonstrated in several diseases, among which chronic inflammation ...

Cell & Microbiology Feb 24, 2016

How the microenvironment can guide secretory cavities into tubes by mechanical forces

A team of scientists from Singapore and France has revealed the underlying mechanism for the formation and growth of a fundamental type of tissue – epithelial tubes. Defects in the architecture of epithelial tubes lead to ...

Cell & Microbiology Feb 23, 2016

Study reveals how cells of an organism interact with their extracellular matrix

The cells of an organism interact not only with each other but with the extracellular matrix that surrounds them. Increasing evidence is unveiling the relevance of this structure—which is secreted by the cells themselves— ...

General Physics Feb 18, 2016

How many holes need to be drilled to collapse a wooden cube?

(Phys.org)—It may sound like a simple riddle, but a team of scientists is intrigued with the answer because it could lead to a better understanding of percolation, the process that occurs when a liquid trickles through small ...

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