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Theory at Biology News

Study casts doubt on 'Snowball Earth' theory

Remains of photosynthesizing microbes in prehistoric rocks suggest Earth was not ice-bound The study appears in the Sept. 29 Science Express. The lead author is Alison Olcott, a Ph.D. student of earth...

Free-energy theory borne out in large-scale protein folding

In unprecedented new research, scientists at Rice University have combined theory and experiment for the first time to both predict theoretically and verify experimentally the protein-folding dynamics of a large, complex protein. "Researchers have succ...

New evidence supports century-old theory of cancer spread

A Yale School of Medicine study in the December issue of Lancet Oncology challenges mainstream oncology researchers to consider tumor cell hybridization with white blood cells as a major reason that cancer metastasizes or spreads to other parts of the body. "Cancer cells exhibit a remarkable number of traits normally attributed to white blood cells known as macrophages, including the abili...

Pitt professor's theory of evolution gets boost from cell research

An article by University of Pittsburgh Professor of Anthropology Jeffrey H. Schwartz and University of Salerno Professor of Biochemistry Bruno Maresca, published Jan. 30 in the New Anatomist journal, shows that the emerging understanding of cell structure lends strong support to Schwartz's theory of evolution, originally explained in his seminal work, Sudden Origins: Fossils, Genes, and the Emerg...

Ernst Mayr's theory illustrated in genetic epidemiology studies

The late, famed evolutionary biologist Ernst Mayr's theory of genetic revolution , introduced in 1954, remains controversial to this day and has many detractors. Mayr believed that genes interacted with one another, and that this genetic interaction in turn led to an interaction of natural selection with genetic drift that could cause genetic revolution ?new directions of evolutionary ch...

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Neutral theory of molecular evolution

. Although the theory was received b...

Endosymbiotic theory

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Theory at Biology Dictionary

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Endosymbiotic theory

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Theory at Medicine News

Marijuana 'gateway' theory strengthened by study of twins

A new study of 311 sets of same-sex twins in which only one twin had smoked marijuana before age 17 has bolstered the fiercely debated "gateway theory" that pot can lead to harder drugs. The study included 136 sets of identical twins who shared the same genetic makeup and all the participants were 30 years of age, on an average, when they were asked about their teenage drug use. The researchers f...

Old theory of adaptation confirmed by new study

The adaptation theory that came up in 1971 argued that people react to good and bad events in their life, but they eventually return to a stable level of well-being. Researchers from Michigan State University, University of Illinois at Urbana-Champaign, France and England confirmed this theory based on a study conducted to evaluate the effects of marital transitions on life satisfaction. 24,000 i...

New cancer theory

According to British scientists chronic inflammation may led to cancer. This is a very complex disease with different causes like, exposure to carcinogens like cigarette smoke, pollution, genetic mutation, few infections and inflammation of tissue. Now Dr Ken O'Byrne of the University of Leicester and Professor Angus Dalgleish of St George's Hospital in London take the inflammation the...

New Information On Virus Goes Against The Age-Old Theory

A researcher from National Institute of Health (NIH) ad brought forward a new theory that challenges the age-old theory concerning virus and body’s immunity. NIH’s Polly Matzinger has developed the "danger model," suggesting // that the immune system is more concerned with damage detected on the basis of a biological cell’s death than with the introduction of foreign invaders, such as...

Scientists breaking theory of cortex formation

Researchers from MIT and University of California are finding out a new theory on the formation of brain cortex through a rich array of signals which connect other brain regions forming a new processing network//. The cerebral cortex is a sheet of around 10 billion neurons divided into distinctly separate areas that process particular aspects of sensation, movement and cognition. To wha...

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(Date:10/10/2008)...n (a) levels boost cardiovascular disease risk fo...y News) -- If you,re worried about reducing your r...at you should quit smoking, eat a healthful diet, ...eck, and make sure your cholesterol levels aren,t ...ein (a) levels are? , Well, if you don,t have ...
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Breaking Medicine News(10 mins):Health News:Little-Known Fat Can Be a Heartbreaker 2Health News:Little-Known Fat Can Be a Heartbreaker 3Health News:Healthcare Resources Available in Difficult Times 2Health News:Healthcare Resources Available in Difficult Times 3Health News:Virginia Rehabilitation Center for the Blind and Vision Impaired Celebrates Opening of New Student Dormitory 2Health News:Video: Just What the Doctor Ordered: Survey Shows Americans Adopting Healthier Lifestyles 2Health News:Video: Just What the Doctor Ordered: Survey Shows Americans Adopting Healthier Lifestyles 3
(Date:10/9/2008)... to the IOF World Congress on Osteoporosis 2008, a...l October 31, 2008. , To benefit from lower rat....iofbonehealth.org/wco/2008/homepage.html . Speci...s from non-OECD countries and for IOF members. Aft...higher rates, will be possible. , Your chance t...
(Date:10/9/2008)...ife,s ability to respond? Biodiversity in a Warmer...e journal, Science , illustrates that cross-disci...cal Research Institute in Panama clearly informs t...on of rainforest and coral reefs, the tropics may ...g. Some disagree, arguing that tropical organisms ...
(Date:10/9/2008)...008 The Indonesian government and World Wildlife ...otect the remaining forests and critical ecosystem... of the world,s most diverse and endangered fore...ver island-wide commitment to protect Sumatra,s st...ndorsed by governors of all provinces across Sumat...
(Date:10/9/2008)...revealed a new mode of propulsion based on how wat...down beneath the surface. , Eric Lauga, an assist...ing at the Jacobs School of Engineering, recently ... called "Crawling Beneath the Free Surface: Water...r snails can drag themselves across a fluid surfac...
Breaking Biology News(10 mins):Smithsonian perspective: Biodiversity in a warmer world 2Saving Sumatra: Indonesia reaches historic agreement 2Ripple effect: Water snails offer new propulsion possibilities 2Ripple effect: Water snails offer new propulsion possibilities 3AHIP Releases Individual Market Guarantee Access Proposal Announces Support for Third Party Review of Rescission Decisions 8526 1AHIP Releases Individual Market Guarantee Access Proposal Announces Support for Third Party Review of Rescission Decisions 8526 2AHIP Releases Individual Market Guarantee Access Proposal Announces Support for Third Party Review of Rescission Decisions 8526 3AHIP Releases Individual Market Guarantee Access Proposal Announces Support for Third Party Review of Rescission Decisions 8526 4DermTech Is Issued U S Patent for the Early Detection Staging and Monitoring of Melanoma 2294 1DermTech Is Issued U S Patent for the Early Detection Staging and Monitoring of Melanoma 2294 2USGI Medical Demonstrates First System for Gastrotomy Closure in NOTES 2291 1USGI Medical Demonstrates First System for Gastrotomy Closure in NOTES 2291 2Breath test can discriminate between a bacterial overgrowth and IBS 8525 1Breath test can discriminate between a bacterial overgrowth and IBS 8525 2
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