Tag: "traced" at biology news

Skin and hair spring from the same stem cells, researchers find

...m the same cache of cells. The researchers have traced the earliest daughters of the stem cells (primitive cells not yet committed to a specific developmental pattern) to the section of the upper follicle adjacent to the region where the stem cells reside. The finding shows clearly for the first time h...

Scientists identify gene for the leading form of dwarfism

... Program. The researchers traced the mutations to a gene known as RMRP, a result that came as an enormous surprise because of the nature of the gene. The RMRP gene belongs to a class known as "untranslated ...

Dangerous beauty: Fungal flowers offer clues to biofilm formation on medical implants

...ts. In fact, every year thousands of deaths can be traced to fungal infections around medical implants. Now, researchers at the Whitehead Institute for Biomedical Research have found a key gene that allows fungi to stick to plastic surfaces and form thin coatings called biofilms. The gene, called FLO11, i...

Language can fuel, or abate, public fears about bioengineered foods

...ses, public resistance, at least in part, has been traced to communication problems flawed rhetorical choices and faulty assumptions by scientists about the role of language, emotion and values in communicating with the media and public," he said. Katz will present "Language and Persuasion: The Communicat...

Key enzyme responsible for fat development discovered

... plasma kallikrein was a prime mover. The research traced the action of plasminogen activators in mouse mammary glands during the first few days after lactation when the glands undergo radical changes from milk production to fat deposition. Plasma from people who lack the gene for plasma kallikrein was als...

Scientists find great-granddaddy of enzyme family

West Lafayette, IN Scientists have traced a protein to the point in early evolution when it first began using a chemical, ATP, to power cells. ATP, or adenosine triphosphate, powers the machinery of cells by releasing energy when its phosphate chemical bond is broken. A study of the structur...

Neonatal diabetes tied to gene defect

...ectrum of glucose-regulation disorders that can be traced to different abnormalities of this gene," said Bell. The parents of the Norwegian child were first cousins. The mother had type-1 diabetes and the father had elevated glucose levels, which he controls with diet. The patient's sister developed type-...

NIH launches online AIDS oral history project

...esearchers think, feel, and do when AIDSeventually traced to a smoldering new virus that would wreak havoc worldwidefirst emerged? To commemorate the twentieth anniversary on June 5th of the first publication about AIDS, the National Institutes of Health (NIH) announces the launch of a new Web site titled ...

From flies to humans-ancient gene may be involved in male infertility

...searchers have discovered a human gene that can be traced back through the mouse to the fly, illuminating a molecular nugget from ancient times that may play a crucial role in male fertility - and infertility. The researchers suspect that the gene, known as BOULE, participates in the creation of sperm at...

Tiny trickster flies into the zoological books

...A fromother wasps with that of the new family, and traced its closestrelatives to others whose ancestors evolved in Gondwana. The Family'sclosest living relatives are mostly only found on Australia, New Zealandand South America, the 'left-overs' of the supercontinent. Other aspects of the insects' natural h...

As peoples taste for exotic foods increases, so too does health risk

...utbreaks, which involved Shigella sonnei, had been traced to a Mexican farm. Many of the ingredients in the Chicago case were from Mexico and were not washed before being put in the bean salad.Shigella, which comes in four strains and is similar to E. coli, causes shigellosis, an infectious disease that le...

Overfishing sets the stage for other problems in marine ecosystems

...n-native species anddeclining water quality can be traced back to a loss of species that exerta controlling influence over marine ecosystems, the authors conclude aftera review of historical data that stretches back thousands of years. In the Gulf of Maine, evidence for the loss of large predatory fish ...

Scientists: Collapse of coastal ecosystems tied to past overfishing

...that our marine ecosystems are facing today can be traced back thousands of years in some cases, and hundreds of years in others, to when human beings first began affecting these ecosystems, Bjorndal says. The paper is an unusual example of scientific literature, and not just because of the number and...

Tips from the Journals of the American Society for Microbiology: August 2001

...robiology, 67: 3763-3766.) Hepatitis C outbreak traced to gynecological surgery Four women in Italy appear to have contracted the hepatitis C virus (HCV) while undergoing gynecological surgical procedures in the same operating room on the same day in 1998. This report, which illustrates the potential...

Widespread 'superbug' is expert at acquiring drug-resistance

...undreds of infections in European hospitals can be traced back to the 1950s, according to researchers at The Rockefeller University. Using the molecular tool called DNA fingerprinting, they have shown that this persistent lineage of Staphylococcus aureus is an expert at acquiring resistance to antibiotics. ...

Researchers discover new route to high blood pressure

...id Lifton. Using antibody markers, the researchers traced the localization of both the WNK1 and WNK4 enzymes in the kidney. They found that both enzymes appeared in regions of the kidney involved in regulating the reabsorption or secretion of salt, potassium and hydrogen ions. While the WNK1 enzyme appeared...

Sleepless aged rats show biological clock problems

...versity of Virginia have found this problem may be traced to a faulty biological clock at least in aged rats. Erik Herzog, Ph.D., assistant professor of biology at Washington University, examined cells involved in the generation of circadian rhythms the 24-hour cycles in things like alertness and hormone...

DNA transcription is tuned to specific cells

...liam C. Sha and Robert E. Hammer detailed how they traced the transcriptional role of TAFII105 to granulosa cells in the ovaries of mice. Granulosa cells surround the developing egg, called the oocyte, and foster its development. The scientists also used DNA microarrays to explore which genes were switched...

Holiday fruit ranks number one in antioxidants

...hat are commercially harvested. Its history can be traced back to this countrys infancy, when it was used by the native Americans to relieve aches and pains. Today, recent studies have shown that cranberries can help prevent urinary tract infections and may reduce the risk of gum disease, stomach ulcers and...

Researchers find closest living relative of first land plants

...unded by the National Science Foundation (NSF) has traced this family tree andidentified a group of algae th...ifferentplants and algae that the lineage could be traced with certainty. Plants didn't write diaries or letters for us to study, butthey do have genetic...

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