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Tag: "shared" at biology news

40,000-year-old skull shows both modern human and Neandertal traits

...ad the same proportions as modern human crania and shared a number of modern human and/or non-Neandertal features. However, there were some important differences: apparently independent features that are, at best, unusual for a modern human. These included frontal flattening, a fairly large juxtamastoid ...

Molecular signature may identify cisplatin-sensitive breast tumors

...er the more common sporadic triple-negative tumors shared that sensitivity was unknown. The current study was designed to answer that question and to investigate the mechanism underlying cisplatin sensitivity. The research team focused on the function of p63, a protein that plays a role in normal breas...

Study uncovers a lethal secret of 1918 influenza virus

...t the ability to modulate immune response may be a shared feature of the most virulent influenza viruses. In the new study, conducted in a high-level biosafety laboratory (BSL 4) at the Public Health Agency of Canada's National Microbiology Laboratory, seven primates were infected with the reconstructed ...

Studies yield insight into the numerical brain

...he right parietal cortex, supporting the idea that shared neural populations encode nonsymbolic quantities a...ymbols and nonnumerical numerosities converge onto shared neural representations," they wrote. "Perhaps we attach meaning to symbols by physically linking pop...

Pacific Rim researchers to collaborate on distributed bioinformatics analysis of avian flu

...ll be able to hit the ground running thanks to the shared expertise, interconnected cyberinfrastructure, grid-enabled software tools and student exchange programs that have emerged out of PRAGMA." Pacific Rim institutions collaborate in PRAGMA to develop grid-enabled applications and coordinate deploymen...

Turtles are loyal in feeding as well as in breeding

...ction of key migratory and foraging areas. We have shared our findings with the Libyan authorities and are encouraging them to investigate these 'hotspots' further. One of the major threats to marine turtles globally is fisheries bycatch. Hundreds of thousands of marine turtles die each year as a result ...

Reversing cancer cells to normal cells

...t types of cells. First, a quick primer on the shared characteristics of aggressive tumor cells and embryonic stem cells: Embryonic stem cells are pluripotent, meaning they are able to differentiate into any of the more than 200 cell types in the adult body. Which type of cell they become depends on the...

Ape gestures offer clues to the evolution of human communication

...related species, researchers are able to determine shared ancestry. We know gestures are evolutionarily youn...mmon ancestor," said Pollick. "A good example of a shared gesture is the open-hand begging gesture, used by both apes and humans. This gesture can be used for...

New study is first to link romantic relationships to genes

...l relationship. "As the proportion of the couple's shared genotypes increased, womens' sexual responsivity to their partners decreased, their number of extra-pair sexual partners increased and their attraction to men other than their primary partners increased, particularly during the fertile phase of their...

How fish mend a broken heart

...." The ability to regenerate tissue is a feature shared among vertebrate species, the researchers said. However, particular animals, including certain amphibians and fish, display an "elevated regenerative spectrum, with many more tissues capable of impressive regeneration," they said. For instance, certa...

End-of-life care can be improved

...f-life care in intensive care units (ICU) and have shared their findings in a special supplement to Critical Care Medicine, the journal of the Society of Critical Care Medicine. The supplement is dedicated entirely to end-of-life care in the critical care setting. "Improving the quality of care received by...

Neuron cell stickiness may hold key to evolution of the human brain

...rved noncoding sequences (CNSs) - sequences of DNA shared by many different organisms that do not code for p...vely advanced in the 5 to 6 million years since we shared a common ancestor with chimps." ...

Tiny Tampa Bay fish key to evolution of immune system

... of immunity emerged - the adaptive immune system, shared by humans and other organisms with jaws and vertebrae. This type relies on an army of antibodies and other immune system cells to customize its response to an array of pathogens and remember the encounter for future reference. "We were asking the qu...

Common ancestry of bacterium and plants could be key to an effective new treatment for chlamydia

... shares an evolutionary heritage with plants. That shared evolutionary heritage, which is not found in most other bacteria, points to a prime target for development of an effective cure for Chlamydia infections. "The unique connection between the Chlamydia bacterium and plants had been proposed by others,"...

Regulating the nuclear architecture of the cell

...s. Because much of the genome of Drosophila is shared with human beings, learning how nuclear organization is controlled in the fruit fly can apply to human disorders like birth defects and cancer. The organization of structures in the cell's nucleus has profound effects on such essential functions as h...

Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals

...itchard's team suggests that human and Neanderthal shared a common ancestor about 706,000 years ago, and that the human and the Neanderthal ancestral populations split around 370,000 years ago. (Researchers found some genetic variation between the two species, which the team attributes to the ancestral popu...

Worms produce surprise insight into human fever

...erved? cell-signaling pathways for innate immunity shared by worms and humans. For one, we have a lot of common enemies, particularly soil-borne pathogens. C. elegans, of course, lives in the soil. Human populations merely ingest soil by the ton in our food, on our hands, and suspended in our drinking wa...

Researchers create genetically matched embryonic stem cells for transplantation

...typing to identify those embryonic stem cells that shared with the egg donor the genes responsible for tissue matching, called the major histocompatibility complex (MHC). When they injected these selected embryonic stem cells into MHC-matched mice, a variety of specialized tissues formed, with no rejection ...

Study finds the air rich with bacteria

... similarities, they determined that the two cities shared a similar microbial composition. "This gives us hope that we can eventually develop a regional airborne microbial census, perhaps even a nationwide or global census," says Andersen. "This will also help us determine the sources of airborne bacter...

Cancer stem cells linked to radiation resistance

...n treatment. It was clear, however, that the cells shared characteristics similar to those of normally functioning nerve stem cells, Rich said. In the current study, the researchers used glioblastoma tissue removed from patients during neurosurgery and created two separate models. For one model, the rese...

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