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X-ray studies shed light on frog deformities
The most extensive study of bone changes found in malformed frogs shows that both time- and location-specific environmental events may influence the development of these malformations. (2000-03-28)
New USGS research shows how land use affects amphibians
New USGS research shows that, despite some risks, rural areas and farms may be friendlier to frogs and toads than urban areas. (2000-03-28)
Evolutionary change leapfrogs over tadpoles
Scientists at the University of Toronto have discovered a species of frog that skips the tadpole phase of development but still requires a thyroid to grow into fully formed adults. (2000-03-27)
Molecular 'handbrake' could be released to send cancer cells to their death
Pharmacologists from Duke University Medical Center have discovered the first evidence that an enzyme called Pin1 acts as a sort of molecular emergency handbrake on cell division, protectively arresting cells from dividing until any damaged DNA has been repaired. (2000-03-09)
Amphibian declines complicated, disturbing
People who are looking for a magic bullet that will explain all of the amphibian deaths and declines around the world are going to be disappointed. (2000-02-17)
Fertilizers linked to amphibian deaths
Researchers have discovered that a level of nitrogen-based compounds which the EPA says is safe for human drinking water - a level often found in agricultural areas as a result of using crop fertilizers - is enough to kill some species of amphibians. (2000-01-04)
Scientists identify novel component of cell-fate pathway
Researchers have identified a new component essential for the proper development of all animals. (1999-09-23)
Agriculture linked to red-legged frog decline in California
The global decline in amphibians has been attributed to everything from UV radiation to global warming. (1999-06-28)
Remarkable results from a new observatory
Scientists at Pacific Northwest National Laboratory have established a new observatory, but instead of looking to the stars, it is a Cellular Observatory designed to focus inward to study the smallest components of living organisms. (1999-06-10)
Parasites, Not Pollution, Responsible For Some Frog Deformities, As Reported In The 30 April Issue Of Science
Parasite infections are the likely cause behind the bizarre deformities that endow frogs with up to 12 hind legs, according to two studies in Science. (1999-04-30)
New Gene May Help Scientists Understand More About How the Body Grows
Scientists at the Whitehead Institute and Genetics Institute, Inc. have identified a new gene called derrière that plays a key role in the development of the frog embryo from the neck down, including the neural tube and the muscles flanking the spinal cord. (1999-03-12)
Amphibian Revival: Build It And They Will Come
The Budweiser beer frogs may be gone, but wood frogs in eastern Missouri have come back with gusto. (1999-02-24)
Study Finds Protein Clues To Early Embryo Development
In a study of life's beginnings, scientists at the University of North Carolina at Chapel Hill have moved a step closer to unraveling the biochemical mystery of embryogenesis, the process by which an egg cell transforms into an embryo. (1999-01-28)
Fool An Egg Into Thinking It's Fertilised, And It Will Repel All Comers
A new generation of contraceptives could be on the way now that American researchers have identified a receptor on the surface of the egg that binds to proteins on a sperm. (1999-01-20)
Elementary Students Mapping Virginia Wildlife
When Christiansburg (Virginia) Elementary School (CES) wanted to start a wildlife mapping and tracking educational program for its students, it turned to Virginia Tech Wildlife Society student members. (1998-12-17)
Trace Amounts Of Nicotine Raise Blood Pressure In An Animal Model
Minuscule amounts of nicotine--comparable to the trace amounts found in the blood after only fifteen minutes of exposure to second hand smoke--can trigger the release of chemicals that raise blood pressure in an animal model, report researchers from the University of Chicago in the October 13 issue of the Proceedings of the National Academy of Sciences. (1998-10-12)
How A Common Protein Becomes A Cancer Killer
In one of nature's remarkable flukes, scientists in 1991 discovered a protein in frog eggs that proved to be a potent killer of cancer cells. (1998-08-31)
Fatal Frog Fungus Found In The United States
The fungus that made headlines as an amphibian killer in Australia and Central America has turned up in a dying wild frog in Arizona, according to the July 4 Science News. (1998-07-02)
Fungus Suspect In Frog Deaths
A new fungal disease appears to be responsible for mass deaths in frog populations in Australia and Panama. (1998-06-26)
Master Molecule Forms Brains In Frogs And Elbows In Mice
The same molecule that instructs cells to meld together correctly into a healthy frog brain turns out to be a crucial factor in forming mouse joints. (1998-06-11)
Increasing Threat Of Extinction For Amphibians? Scientists To Seek Answers At NSF Workshop
Where have all the frogs, toads and salamanders gone? The world's leading researchers on amphibian declines will debate that question, and seek explanations for continuing downward trends of some amphibian populations, at a workshop sponsored by the National Science Foundation (NSF). (1998-05-15)
Max Planck Scientists Report Molecular Details On The Interaction Of The Stress Hormone Corticotropin-Releasing Factor (CRF) And Its Receptor
Scientists of the Dept. of Molecular Neuroendocrinology, Max Planck Institute for Experimental Medicine, Goettingen/Germany, identified the region of the human and frog (Xenopus laevis) CRF receptors (type 1) responsible for the binding of the stress hormone CRF and naturally occurring CRF analogs (Proc.Nat.Acad.Sci., Vol 95 (9), April 28, 1998). (1998-05-06)
Harvard Medical School Researchers Identify Four Human Genes Essential To Cell Division; Discovery Yields New Target For Cancer Therapies
Researchers at Harvard Medical School have identified four human genes that serve a critical role in cell division. (1998-02-24)
Amphibian Mortality Due To UV Radiation
Yale University -- Field experiments in the Oregon Cascade Mountains have confirmed what many scientists had suspected - - ambient levels of ultraviolet-B (UV-B) radiation from the sun can cause high rates of mortality and deformity in some species of frogs and other amphibians. (1998-02-17)
Females' Siren Song Initiates Courtship Duets In African Frogs, Columbia Biologists Find
When her eggs are ready to fertilize, the female South African clawed frog begins a clicking song that initiates a courtship duet with a nearby male that helps the partners find each other. (1998-02-17)
In Minnesota, Wisconsin, New York, Vermont And Parts Of Canada: Why Are The Frogs Malformed? -- Parasites, Pesticides And/Or UV?
A workshop on Strategies for Assessing the Implications of Malformed Frogs for Environmental Health will be held Dec. (1997-11-18)
Researchers Studying Deformed Frogs Found In Southeastern Ohio
Researchers at Ohio University are studying deformed frogs found at a pond in Southeastern Ohio, trying to determine if the deformities are caused by a naturally occurring parasite, chemicals used in a nearby cornfield or some other phenomenon. (1997-11-17)
Antimicrobial "Bug Spray" Found In Human Lung Cells
Hopkins scientists studying lung damage from cystic fibosis (CF) have found a natural (1997-06-18)
Scientists Use Magnetic Field As Alternative To Space-Based Zero Gravity
Use of a magnetic field to levitate living specimens suggests a ground-based alternative to sending astronauts into space for expensive zero-gravity experiments. (1997-05-15)
Researchers Solve A Puzzle In Eye Development
Researchers at Washington University School of Medicine in St. Louis have solved a centuries-old puzzle: Do both our eyes develop from a single precursor or does each develop from a single structure (1997-01-27)
Scientists Discover Smallest Frog
A new frog discovered in Cuba by scientists funded by the National Science Foundation is the smallest in the Northern Hemisphere, and is tied for the world record with the smallest frog in the Southern Hemisphere, says a biologist from Pennsylvania State University in a paper published in the December issue of the journal Copeia (1996-12-18)
Scientific Conference On Amphibian Decline Taking Place On Internet
In what organizers believe is the first of its kind, researchers studying amphibian declines are interacting in a three-month-long scientific conference being held exclusively on the World Wide Web (1996-12-13)
Scientists Discover Smallest Frog
A new frog discovered in Cuba is the smallest in the Northern Hemisphere and is tied for the world record with the smallest frog in the Southern Hemisphere, say a team of biologists from Cuba and Penn State. (1996-11-25)
Frog Is Prince of New Technology
An easy, no-frills method of producing transgenic frogs by the hundreds, inexpensively and overnight, has been developed by Harvard Medical School researchers. (1996-10-01)
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