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Tag: "oldest" at biology news

Researchers trace evolution to relatively simple genetic changes

... have evolved over and over again. It's one of the oldest and most characteristic differences between stickleback forms. It's a dramatic change: a row of 35 armor plates turning into a small handful of plates - or even no plates at all." Using genetic crosses between armored and unarmored fish from wild po...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

... have evolved over and over again. It's one of the oldest and most characteristic differences between stickleback forms. It's a dramatic change: a row of 35 armor plates turning into a small handful of plates - or even no plates at all." Using genetic crosses between armored and unarmored fish from wild po...

Potential Cure for Lymphoma in HIV patients

...ced in a majority of the patients.One patient, the oldest in the study, developed cardiomyopathy (aweakening of the heart) and kidney failure due to treatment toxicitiesand died a few weeks after the transplant. Opportunistic infections,such as herpes zoster and cytomegalovirus infection, also occurred in a...

Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells

...ther center in the world ?147 children in all. The oldest Duke patient transplanted for a lysosomal storage disease is now seven years old and has developed and progressed normally, according to Kurtzberg. Kurtzberg said their treatment successes provide a strong argument for mandatory, universal screening...

Oldest fossil human protein ever sequenced

...ng to approximately 75,000 years old. This is the oldest fossil human protein ever sequenced. The research will be published the week of March 7-11 in the online early edition of Proceedings of the National Academy of Sciences (PNAS). "This research opens up the possibility of getting detailed protein inf...

Oldest cranial, dental and postcranial fossils of early modern European humans confirmed

...time, through modern radiocarbon dating, to be the oldest cranial, dental and postcranial assemblage of earl...radiocarbon dating has been performed. This is the oldest assemblage of modern humans in Europe which retains many portions of the skeleton plus archaeologica...

Researchers find new giant amphibian fossils in Africa

...in today's issue of Nature, describe the first and oldest amphibious carnivores from the Republic of Niger in West Africa. "This the first evidence of carnivores in this area," says McGill paleontologist, and co-author, Hans Larsson. "This find is particularly interesting because the animals we found are n...

Infants with Rare Genetic Disease Saved By Cord Blood Stem Cells

...ther center in the world ?147 children in all. The oldest Duke patient transplanted for a lysosomal storage disease is now seven years old and has developed and progressed normally, according to Kurtzberg. Kurtzberg said their treatment successes provide a strong argument for mandatory, universal screening...

UCLA study assesses cost-effectiveness of Hepatitis B drugs

...er 15 years. The study notes that interferon ?the oldest of all available therapies -- may still be preferred in health care systems with limited resources and is especially cost-effective with "e-antigen negative" patients, which is a more serious type of hepatitis B. "We found that the newer, more 'sexy...

Leprosy genome tells story of human migrations, French researchers report in Science

...colonialism and later the slave trade. One of the oldest known human diseases, leprosy is still a significant problem in parts of the developing world, especially India. According to the World Health Organization, roughly 500,000 new cases were detected in 2003. (http://www.who.int/lep/stat2002/global02.ht...

Rensselaer researchers develop approach that predicts protein separation behavior

...echnic Institute, founded in 1824, is the nation's oldest technological university. The university offers bachelor's, master's, and doctoral degrees in engineering, the sciences, information technology, architecture, management, and the humanities and social sciences. Institute programs serve undergraduates...

Digging in the dirt for life's biochemical foundations

...he fungus-plant partnership is one of the planet's oldest and dates back more than 400 million years, when plants began to move out of the oceans and onto land. Plants trade a bit of their sunlight-made sugars for building block nutrients that fungi wring from the soil. Scientists have understood broad outl...

Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils

...where such fossils are best known, are some of the oldest fossils with large body size and complex morphology. "Present in rocks ranging from 575 to 540 million years in age, these fossils provide the key to understand the prelude to the Cambrian Explosion when animals with skeletons and familiar morphologi...

Identical twins may have more differences than meet the eye

...e female. The youngest set of twins was 3, and the oldest pair was 74. All of the participants were asked to...st identical genomes. But that wasn't true for the oldest pairs of twins. Genetically speaking, these twins were the least alike. The process that alters gen...

Scientists find evidence of catastrophic sand avalanches, sea level changes in Gulf of Mexico

...e female. The youngest set of twins was 3, and the oldest pair was 74. All of the participants were asked to...st identical genomes. But that wasn't true for the oldest pairs of twins. Genetically speaking, these twins were the least alike. The process that alters gen...

Scavenger cells could be key to treating HIV-related dementia

...icine who co-authored the study. "It's likely the oldest (form of the) virus lives in a macrophage in the brain and most virus strains evolve from that," McGrath said. "Imagine having cells, already infected, that live as long as you do." Current antiretroviral drugs block HIV from replicating in new T ce...

Applying ecological laws to bacteria

...ers have obtained further evidence that one of the oldest biological laws can also be applied to bacteria living in the sump tank reservoirs of machines in an engineering workshop in Oxford, according to a paper published in Environmental Microbiology. Scientists from the Centre for Ecology & Hydrology...

Oldest dated evidence of cattle in southern Africa found

...trometry (AMS) radiocarbon technique, provides the oldest directly dated evidence of cattle in southern Africa. Domestic sheep were also present at Toteng at about the same time. Historical and linguistic information suggest northern Botswana figured prominently in the arrival and dispersal of livestock in...

Ancient anthropoid origins discovered in Africa

... fill in the gap between later anthropoids and the oldest undisputed anthropoid, called Algeripithecus, found in Algeria, which lived around 45 million years ago. That species had been characterized by only a few teeth, which precluded significant insight into the species, said Seiffert. Seiffert also note...

Why Christmas trees are not extinct

...es are conifers: redwoods and sequoias. So are the oldest trees, bristlecone pines. So how did conifers over...e short and inefficient and evolved in some of the oldest plants some 400 million years ago. The highly efficient, torus-margo valves evolved in conifers and ...

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