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Tag: "primate" at biology news

Transplantation Of Monkey Embryonic Stem Cells Reverses Parkinson Disease In Primates

...ally simple andefficient, were recently applied to primate embryonic stem cells andresulted in the generation...ed with anagent called MPTP, which is considered a primate model for Parkinsondisease. These transplanted cells were able to function as DA neuronsand diminish...

Novel Enzyme Shows Potential As An Anti-HIV Target

...son to the 3.2 gigabases of its human and nonhuman primate targets. The compact retrovirus encodes just 14 proteins, which play different roles in promoting viral infection and virulence. As a retrovirus, HIV uses the host’s cellular machinery—including RNA polymerases, which carry out transcription—to copy ...

Scientists document complex genomic events leading to the birth of new genes

...kingdom. Human chromosome 2 has always intrigued primate biologists; it formed from the fusion of two mid-s... and characterizing genes that are responsible for primate or human distinctiveness has been a major challenge to scientists. However, this work by Bork and hi...

Brain May Be Less Plastic Than Hoped

The visual cortex of the adult primate brain displays less flexibility in response to retinal injury than previously thought, according to a new study published in the May 19, 2005, issue of the journal Nature. This may have implications for other regions of the brain, and the approach th...

A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years

...angabey?(Lophocebus kipunji), a long-haired forest primate first discovered on the flanks of the 10,000 ft (2...With the addition of another threatened species of primate to those species previously documented, the Udzungwa Mountains are arguably the most important site ...

Retrovirus struck ancestors of chimpanzees and gorillas millions of years ago, but did not affect ancestral humans

...rs also don't know the impact the virus had on the primate species it did affect. They found many copies of t...ps and gorillas. The virus struck when each of the primate groups was still an incipient species with widely varying populations. If the virus had killed off ...

NHGRI targets 12 more organisms for genome sequencing

...inate the similarities and differences among these primate genomes. The second project chosen for its considerable medical relevance to humans will identify 280,000 single nucleotide polymorphisms, known as "SNPs," in the genomes of eight different strains of laboratory rats. SNPs can be used as markers to ...

Primates on the brink

... reveals that 25 percent-or one in four-of the 625 primate species and subspecies are at risk of extinction. ...warns that failure to respond will bring the first primate extinctions in more than a century. The golden-headed langur of Vietnam and China's Hainan gibbon n...

Chimp genome reveals a retroviral invasion

...ion that an ancient infection invaded an ancestral primate lineage, since great apes (including humans) share...l, as well as the LTR sequences, for each infected primate species. The sequence history, they discovered, did not comport with the established evolutionary hi...

Ebola virus: from wildlife to dogs

...a virus antibodies in several species of non-human primate suggests the existence within this fauna of differ...o transmission from the reservoir to the non-human primate and then to humans. It is quite possible that several reservoir species co-existent and that many ot...

Can our genes tell the story of our divergence?

...erstanding why we're so different from our closest primate cousins, but this study provides plenty of tools, and hypotheses, to mine the tiny differences in our DNA for more clues. ### Citation: Nielsen R, Bustamante C, Clark AG, Glanowski S, Sackton TB, et al. (2005) A scan for positively selected genes i...

Scientists track stealth DNA elements in primate evolution

...ed these elements to those in the genomes of other primate species, including chimpanzees, bonobos, gorillas,...some AluYb subfamily members have orthologs in all primate genomes tested, which dates the AluYb linage to an origin approximately 18-25 million years ago. The...

'Punctuated' evolution in the human genome

... 2. This chromosome has intrigued evolutionary and primate biologists for years because it appears to have fo...a comparative analysis of these duplicons in other primate species, including chimpanzee, gorilla, orangutan, baboon, and macaque. This analysis revealed that ...

Logging changed ecological balance for monkeys, damaged health

...e red-tailed guenon (Cercophithecus ascanius) is a primate still in decline. The logging practice, scientists...itic infections. The researchers focused on three primate species, collecting 1,076 fecal samples from the heavily logged area and from an undisturbed, nearby...

Affymetrix and ParAllele Launch Industry's Most Comprehensive Product Line for Targeted Genotyping

...e red-tailed guenon (Cercophithecus ascanius) is a primate still in decline. The logging practice, scientists...itic infections. The researchers focused on three primate species, collecting 1,076 fecal samples from the heavily logged area and from an undisturbed, nearby...

President Bush's cut to AIDS prevention in Africa would be devastating

...e red-tailed guenon (Cercophithecus ascanius) is a primate still in decline. The logging practice, scientists...itic infections. The researchers focused on three primate species, collecting 1,076 fecal samples from the heavily logged area and from an undisturbed, nearby...

Primate virus jumps species barrier to humans for first time in Asia

...rous, the scientists warn that the dense human and primate populations in Asia could lead to other primate-bo...een much work on the topic in Asia, which has huge primate diversity and large human populations." Jones-Engel and her co-authors also argue for more research...

NHGRI Selects 13 More Organisms for Genome Sequencing

...eeked gibbon (Nomascus leucogenys). This non-human primate species belongs to a major evolutionary branch that has not yet had the genome of any of its members sequenced. The gibbon genome is unique because it contains many chromosomal rearrangements, which makes it valuable for studying how such rearrangeme...

Possible treatment found for 'chemobrain'

...eeked gibbon (Nomascus leucogenys). This non-human primate species belongs to a major evolutionary branch that has not yet had the genome of any of its members sequenced. The gibbon genome is unique because it contains many chromosomal rearrangements, which makes it valuable for studying how such rearrangeme...

Ancient DNA confirms single origin of Malagasy primates

...ike the living lemurs, are descended from a single primate ancestor that colonized Madagascar more than 60 million years ago, Yoder said. The biologists extracted DNA from nine subfossil individuals in two of the more bizarre extinct species, Palaeopropithecus and Megaladapis. The first has been likened to ...

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