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Tag: "present" at biology news

Heavy smoking cuts women's chance of pregnancy -- even with donated oocytes

...ation of its receptors and all the other molecules present in the cell. It could be that heavy smoking disrupts the stability of cells in the lining of the uterus differently in some women to others or triggers a response in the embryo itself, resulting in a reduced general pregnancy rate overall, but an inc...

Researchers identify a key regulator for skin stem cells

...maintaining adult follicle cells, it would also be present in embryonic skin, which consists mainly of stem cells. When they analyzed the epidermis of embryonic mice, they found that theTcf3 gene was, indeed, active in the embryonic skin stem cells. The researchers next sought to pinpoint which genes Tcf3...

New technique boosts size of proteins that can be analyzed

...formation on a protein from scratch when it is not present in any database. ...

Molecules in blood foretell development of preeclampsia

... the baby. In the current study, the researchers present strong evidence that an imbalance of two proteins produced by the placenta is responsible for the symptoms of preeclampsia. Abnormally high levels of these proteins appear to deprive the blood vessels of substances needed to keep the lining of the b...

Selecting life: Scientists find new way to search for origin of life

...rigin of life. We know that organic compounds were present in the early Earth environment, but as dilute solutions of thousands of different species in the global seas. How were specific kinds of organics selected to assemble into the first forms of life, and by what process were they sufficiently concentrat...

Elusive rust resistance genes located

...stance through a simple DNA test. If the marker is present then it’s almost guaranteed Lr34 / Yr18 will be too." Plant breeders have long recognised the usefulness of Lr34 / Yr18, which work together with other rust resistance genes to boost the plants?capacity to defend itself. Wheat plants that conta...

Researchers develop technologies to devour food pathogens

...t to prevent food-borne illness," he said. "In the present system, once produce is contaminated with something like E. coli, that's it." Arun Bhunia (pronounced Boon-ee-yuh), also a professor of food science, leads the team that developed the laser-based technology, called "Bacteria Rapid Detection Using O...

A new approach to growing heart muscle

...ore of the nutrients and other conditions that are present in the body. ...

American scientist's research of life's first cells

...r Young Life Scientists grand prize winner and may present regional awards in four geographic regions: North America, Europe, Japan and all other countries. These regional winners receive $5,000 awards. In addition to the grand prize, the 2006 awards also recognize the following regional winners: Dianne...

Newly identified biomarker detects and regulates spread of brain tumors

...--the most common form of intracranial tumors--are present in the CNS. The CSF is a liquid that bathes the brain and acts as a reservoir, which can be sampled for analysis of proteins secreted by CNS tumors. This newfound ability to reliably identify biomarkers for malignant astrocytomas means that phys...

Virus may control Australia's

... of Koi herpesvirus in controlling strains of carp present in Australia and will examine whether the virus will have any impact on certain native fauna. "All testing will be done within the secure biocontainment facilities at CSIRO AAHL," Dr Crane says. Dr Crane says while carp are a valuable resource in A...

Fast test for low blood flow in dogs detects early heart trouble

...d and cause heart attack. The Hopkins team will present their initial findings Nov. 12 at the American Heart Association's annual Scientific Sessions in Chicago. Already, the Hopkins technique, in which patients are given a drug to stress their heart during the scan, is undergoing clinical testing. Resu...

Sports cheats beware -- new test detects previously undetectable drug

... about its statement that a particular molecule is present ?in this case synacthen. To confirm that the immunological purification has pulled out synacthen, the protein is then subjected to a further two-stage test ?chromatography separation and mass spectrometric analysis. This lets scientists produce a che...

Mapping the mouse genome

...ogy, Sagiv Shifman, Jonathan Flint, and colleagues present a high resolution genetic map for the mouse genome--one of the most detailed genetic maps now available aside from that for humans. To create this map, they used two groups of mice: one consisting of outbred, heterogeneous stock (HS) and the other...

Study IDs protein that inhibits HIV from growing in cell cultures

... HIV-positive individuals have evidence of past or present infection with GBV-C. Stapleton and Xiang first began studying the GBV-C and HIV connection because they were skeptical of earlier studies published in the mid-1990s. "It was a strange story," Stapleton said. "Who would have thought a virus flo...

Wild gorillas carriers of a SIV virus close to the AIDS virus

...gor. The genetic characteristics of the virus were present again in three gorillas living more than 400 km apart. Phylogenetic analysis of SIVgor showed it to be related to HIV-1 group O found in humans, essentially in Cameroon and in neighbouring countries. This discovery of an HIV-1 related virus in wild...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

...ec. 11, an international panel of researchers will present new findings about the extreme and not-so-extreme ...ovides evidence that ammonia-oxidizing archaea are present in hot springs and are actively nitrifying,'' said ecologist Andreas Richter of the University of Vi...

Drug can quickly mobilize an army of cells to repair injury

...the treatment act quickly - the condition has been present for months before the patients are treated - and the drug already has FDA approval for medical use. We want to find out if this treatment will lead to long-lasting improvement in blood flow, heal ulcers, relieve pain and prevent amputations." ...

Longer-lived rodents have lower levels of thyroid hormone

...nfluence longevity," the authors wrote. Pinto will present the study "Differential thyroid hormone activity in rodents with different life spans" at a poster session Oct. 9 at Comparative Physiology 2006: Integrating Diversity. The study was carried out by Pinto and Rochelle Buffenstein, City College of New ...

Siberian lakes burp 'time-bomb' greenhouse gas

...ng to Walter, her team's calculations increase the present estimate of methane emissions from northern wetlands by between 10 and 63 percent. Walter studied a unique type of permafrost in Siberia, called yedoma, which contains an estimated 500 gigatons of carbon, largely in the form of ancient dead plant m...

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