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Tag: "shrinkage" at biology news

The making and breaking of microtubules

...ynamic instability," this ongoing rapid growth and shrinkage is key to the diverse workings of microtubules in the cell. For the first time, researchers have revealed at molecular level the forms taken by transitional structures of tubulin (the protein from which microtubules are formed) during the assembly a...

Investigating 'brain shrinkage' in alcoholics

... or "hard wiring" of the brain, and can also cause shrinkage or retraction of neuronal dendrites; however, the ... added, some changes can be transient, such as the shrinkage of dendrites, those fibers that allow neurons to "talk" with neighbouring neurons. "In experimental ...

Two designer drugs hit same lung cancer target, but only one is effective

...ctions were confirmed: all patients had some tumor shrinkage when they received Iressa, but none of the cancers responded to Erbitux. Janne says that the experiment told the scientists something new about the biology of the EGFR mutation in NSCLC. "The lesson is, to inhibit the mutant receptor, you need to in...

Methamphetamine Abuse, HIV Infection Cause Changes in Brain Structure

...ed with HIV infection may contribute to brain cell shrinkage or loss. Dr. Volkow says medications that reduce inflammation might be useful in treating methamphetamine abusers. “The effects of methamphetamine and HIV on the brain are distinct but may affect the same brain regions, so understanding how the und...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

... to serve as a reservoir for water, no cracking or shrinkage is observed. The cells are maintained in the necessary fluidic environment." The cell-architected nanostructure is, he says, "an amazing way to preserve a cell." The cells already have emerged still viable after examination in electron microscope...

How ancient whales lost their legs, got sleek and conquered the oceans

...al Academy of Sciences, scientists say the gradual shrinkage of the whales' hind limbs over 15 million years was the result of slowly accumulated genetic changes that influenced the size of the limbs and that these changes happened sometime late in development, during the fetal period. However, the actual los...

A fisheye view of the deadliest breast cancer

...ock-treated animals revealed that SU5416 leads to shrinkage of tumor cells and tumor-induced vasculature, while PP1 mainly affects tumor cell survival. In all, the researchers were delighted with their breast cancer model’s ability to work as a real-time study window into IBC tumor behavior and as a rapid...

Tissue engineered scaffolding allows reproduction of cartilage tissue

...generating cartilage than traditional therapy. The shrinkage of cartilage that occurs frequently in other tissue engineering methods, and often renders the replacement tissue wrongly-sized for implantation, did not occur in the study. The scaffolding allowed the newly grown cartilage to maintain its volume dur...

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