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Tag: "kind" at biology news

Spleen may be source of versatile stem cells

...Medical School.She adds, "This data also shows the kind of payback that can come fromstudies of lower animals like newts and sponges. Combining theknowledge of Hox11's role in those animals with what we'd found aboutislet cell regeneration in mice helped us find this previously unknownexample of normal, c...

Growth in the sea comes down to a struggle for iron

...lear, but the answer could be that iron sets off a kind of chemical warfare in the marine ecosystem, according to University of Maine oceanographer Mark Wells. And diatoms may not always come out on top. In collaboration with a large Japanese research program, Wells and a team of scientists from UMaine a...

Combination therapy boosts effectiveness of telomere-directed cancer cell death

...tops dividing. In a sense, telomeres function as a kind ofcounting mechanism that regulates how many times a cell can divide.In contrast to normal cells, cancer cells divide continuously anduncontrollably. Scientists know that cancer cells produce an enzyme,called telomerase, which prevents telomeres from...

GATA: a graphic alignment tool for comparative sequence analysis

...tops dividing. In a sense, telomeres function as a kind ofcounting mechanism that regulates how many times a cell can divide.In contrast to normal cells, cancer cells divide continuously anduncontrollably. Scientists know that cancer cells produce an enzyme,called telomerase, which prevents telomeres from...

Learning to fight an adversary that won't stay down

...if three billion years of bacterial history is any kind of track record, we're in for an endless running battle, says Dr. Julian Davies, a microbiologist at the University of British Columbia. "We haven't evolved in our thinking sufficiently to be able to match the microbes," says Dr. Davies, Scientific ...

Dinosaur DNA? New Patent Covers Degraded DNA recovery

... Stewart remarks, "This is the first patent of its kind to be allowed by the US Patent Office" Dr. Ensley believes that one of the first applications could be in forensic science, where time, the traumatic circumstances of a crime scene or the environment has caused DNA samples to become degraded. "We ho...

Gene therapy converts dead bone graft to new, living tissue

...mals use their skeletons for both support and as a kind of "calcium bank." If calcium, which is necessary for such important functions as maintaining the brain and heart, runs low, cells called osteoclasts dig out the calcium from our bones. This is why doctors encourage post-menopausal women to take calc...

Female sex hormones play a vital role in defense against sexually transmitted diseases

...nderstand why, and our hope is that by doing these kind of mouse studies, we can understand the mechanisms." In the first study, female mice received either the hormone estradiol or progesterone, a combination of both, or nothing at all prior to exposing them to the herpes virus. Both estradiol and proge...

Experiments provide proof of how traveling in groups protects insects

... young locusts also sometimes unite with their own kind and form teeming, hungry islands of life that devour everything in their path that's edible. Some spectacular marching packs stretch several miles wide and extend 10 miles or so in length. And they can travel a mile or so a day. Why such groups of i...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

...and broader significance to the field. "This is a kind of cellular fine-tuning, and we know that deficits...uge the importance of particular proteins, using a kind of Òon/offÓ comparison. They do this by using Òknock-outÓ mice genetically engineered to either expr...

Experiments provide proof of how traveling in groups protects insects

... young locusts also sometimes unite with their own kind and form teeming, hungry islands of life that devour everything in their path that's edible. Some spectacular marching packs stretch several miles wide and extend 10 miles or so in length. And they can travel a mile or so a day. Why such groups of i...

First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers

... compounds could provide patients with a brand new kind of hope." The research was funded by grants from the National Institutes of Health. Co-researchers included Ms. Dandan Shan (first author), Mr. Lin Chen, and Dr. Xiaojing Ma, of Weill Cornell Medical College; and Dr. Jon T. Njardarson, Dr. Christop...

Taking Aim With Nanoparticle PEBBLEs

...eaded disease: cancer. And the pebbles are not the kind you hurl from slingshots; they're nanoscale polymer beads known as Photonic Explorers for Biomedical use with Biologically Localized Embedding (PEBBLEs). First developed as sensors to explore and monitor cellular processes, PEBBLEs now hold promise ...

Gene Vaccine Protects Mice Against Development Of Her2/neu Breast Cancer

...s difficult to stop.The drug Herceptin treats this kind of breast cancer by “plugging?these receptors with a monoclonal antibody, but this treatment“produces only a passive and transitory immune reaction,?Lachman said.“This vaccine, however, like many that treat microbial infections,appears to create a me...

A comprehensive response to HIV could prevent 10 million AIDS deaths in Africa by 2020

...s difficult to stop.The drug Herceptin treats this kind of breast cancer by “plugging?these receptors with a monoclonal antibody, but this treatment“produces only a passive and transitory immune reaction,?Lachman said.“This vaccine, however, like many that treat microbial infections,appears to create a me...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...n, Ph.D., first author of the Blood article. "This kind of information should help physicians improve their ability to manage individual patients by predicting how they will respond to stem cell transplants." Other authors of this study are Raymond Barfield, Ely Benaim, Wing Leung, James Knowles, Dawn La...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

...ll." The biocavity laser It is these changes - a kind of beefing-up of the criminal forces - that Gourley's device, called a biocavity laser, detects. A nano-thin layering of gallium aluminum arsenide combinations send up numerous tiny beams from a small cross-sectional generating area. These beams are...

Newly Discovered Compound Blocks Known Cancer-Causing Protein

...sing automated robotics, the facility provides the kind of drug discovery capability usually available only to pharmaceutical company scientists. Duke's new facility is a finalist for one of six $9 million National Institutes of Health (NIH) grants that will create a national network of publicly accessib...

Study of genomic DNA leads to new advances in cancer diagnostics

... information, Dr. Maniotis's group developed a new kind of extracellular matrix chip (patent pending) that is being used to study drug-resistance mechanisms to develop new protocols and methods to treat cancer. Ultimately, the cellular changes that occur during cancer formation affect how the cell intera...

New RNA polymerase discovered in plants

...gy in Arts & Sciences, has discovered a fourth kind of RNA polymerase found only in plants and specula...nt," he said. "We don't know its template, or what kind of RNA ?long or short ?it makes. Presumably, because it is inherently different from the other RNA p...

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