Tag: "perfected" at biology news

Rice bioengineers pioneer techniques for knee repair

... his students Adam Aufderheide and Gwen Hoben have perfected methods of growing meniscus-shaped pieces of cartilage, but they are still trying to perfect the mechanical strength of the engineered meniscus tissue, which must be able to withstand up to an astounding 2,400 pounds per square inch of compressive pr...

Lack of a key enzyme dramatically increases resistance to sepsis

... "Without the experimental model of peritonitis perfected by John Mathison from Scripps Research, we would not have been able to differentiate between the two mouse phenotypes," Ulevitch said. "Because of his work, we were able to use a surgically implanted stent in the colon that allowed a gradual occurren...

UF scientists discover evolutionary origin of fins, limbs

...sed to construct and position our limbs were being perfected more than half a billion years ago in fishes, not along the sides of the body where the fins that preceded human arms and legs sprouted, but at the midline that runs along the backbone and belly. This midline -- think of the dorsal, tail and anal ...

Spinal cord bridge bypasses injury to restore mobility

...ional connections. Silver said if the method is perfected and successful with primates, it could go to human trials within a relatively short time. His next step is a neural bridge that would help quadriplegics, who are unable to breathe without assistance, move their diaphragms on their own. In futur...

Engineering the heart piece by piece

...ality. Even if cell-growing conditions can be perfected to produce tissue that is strong, durable and shaped like the native tissue it is designed to replace, another major challenge remains: which type of cells to use. Or more clearly, which types of cells to use ?because heart muscle tissue is made up o...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

...e rid of contaminants. Using techniques and tricks perfected while working on the mammoth sample, Asara purified the protein, identified as collagen, and, with the enzyme trypsin, broke it down into fragments, or peptides, 10 to 20 amino acids long. The peptides were passed over a liquid chromatography (LC) co...

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