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Tag: "unique" at biology news

OHSU surgeon implants donated tissue allografts

...ransplantation. Recently, as a result of these unique efforts, the national leader in fresh allograft cartilage preparation, AlloSource of Centennial, Colo., has partnered with Community Tissue Services (CTS) of Dayton, Ohio, to create the Joint Restoration Foundation (JRF), allowing Portland to become ...

Tracking sperm whales and jumbo squid

...," the authors wrote. "This research provided a unique opportunity to learn more about two species that are very difficult to study in their natural habitat," Davis noted. "In the future, this co-tagging approach should yield new insights into predator-prey interactions with other pelagic species that ar...

Smithsonian scientists discover new marine species in eastern Pacific

...ave really paid off," Norenburg said. One of the unique features of the islands off the coast of Panama is that they host animals that normally are found in the Indo-Pacific, half a world away. "To think that the larvae of Hymenocera picta, a little shrimp we collected on Isla Seca, can survive a journey...

Bacterial walls come tumbling down

...acteria. The enzymes that create the cell wall are unique to bacteria. And it is accessible; you don't have to get the antibiotics into the cell." In their structural studies, the researchers focused on Staphylococcus aureus, a notorious human pathogen. An epidemic strain of the bacteria known as methici...

Female Antarctic seals give cold shoulder to local males

... will remain static waiting to be chosen). This unique mating practice enables the seals to avoid the loss of genetic variation which occurs when females of the species only mate with dominant males with favoured traits. This is significant as studies have shown that more genetically diverse individuals...

Loss of a universal tRNA feature reported

...ved absence of the extra guanylate in tRNAHis is a unique case of divergence from a highly conserved ancient tRNA recognition mechanism by an aminoacyl-tRNA synthetase. It will be of special interest to examine if the loss of this tRNA feature has resulted from the presence of an RNase P enzyme that is no l...

Massive coral death attributed to earthquake

...pecies now dominate the shallow reef." "This is a unique opportunity to document a process that occurs maybe once a century and promises to provide new insights into coral recovery processes that until now we could only explore on fossil reefs" says Dr Baird. Dr Campbell adds "The news from Simeulue is ...

New study challenges 'critical period' in childhood vision development

...and study congenitally blind children in India. A unique case study that resulted from this project appears in the December 2006 issue of Psychological Science. Dr. Sinha and two graduate students, Yuri Ostrovsky and Aaron Andalman, were introduced to a woman in India who was born blind due to dense co...

Anti-wrinkle compound causes pathological reaction in skin cells

...r or not it poses a health risk." DMAE is not a unique case in the world of beauty products, continues the researcher. "Several compounds found in cosmetics are just as complex as medication—they are absorbed through the skin, flow through the bloodstream, are expelled by the kidneys, or stocked in cells...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

...xtinct species, the real goal is to find sequences unique to that organism. Asara generated a set of theoret... identified a total of 78 peptides, including four unique sequences. "As we get better at doing the extractions, and the sensitivity of the instruments and...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...enter have unlocked the genetic reason why. Using unique mouse models to mimic the progression of both forms of human pancreatic cancer, researchers have discovered that a specific sequence of otherwise common genetic mutations is responsible for sending cells down the less-traveled path toward cystic panc...

Trusting your instincts leads you to the right answer

...ious scanning technique that allows us to pick out unique and distinctive features in a crowd ?such as colour or orientation. Soon after our eyes have fixed on a target, the conscious or top-down part of cognition engages and examines whether the candidate really is the target or not. If the target is not d...

Darwin's famous finches and Venter's marine microbes

...hey encounter not by their appearance but by their unique genetic code. The current studies analyze samples collected from surface waters during the first phase (or first third) of the voyage, which led the Sorcerer II from Newfoundland through the Panama Canal and Galapagos Island on to French Polynesi...

Surgeons develop simpler way to cure atrial fibrillation

...ano says their most recent study of Cox-maze IV is unique because the surgeons carefully matched the age, sex and cardiac conditions of a group of patients who underwent Cox-maze III in the past with patients undergoing Cox-maze IV. "This is the first documentation of the effectiveness of the ablation devic...

New cell type identified in cancer development

...hat several cell lines from those tumors carried a unique and provocative phenotype, or surface protein signature: They carried neither the Sca-1 or c-kit markers, hallmarks of normal bone marrow stem cells, nor the lineage markers most of the cancer cells had, but they did exhibit stem-like structure. T...

Homing pigeons get their bearings from their beaks

...searchers further believe that this ability is not unique to homing pigeons as they expect that the ‘pigeon-type receptor system ?might turn out to be a universal feature of all birds? Equally, this concept might not only exclusively apply to birds, since it has been shown that many animals display behavio...

Paleontologists discover new mammal from Mesozoic Era

...ing or living on the ground. In addition to its unique ear structure, Yanoconodon also has a surprisingly high number of 26 thoracic ("chest") and lumbar ("waist") vertebrae, unlike most living and extinct terrestrial mammals that commonly have 19 or 20 thoracic and lumbar vertebrae. The extra vertebrae ...

Researchers urge monitoring of bone health during chemotherapy

... is revved up," Weilbaecher says. "But G-CSF isn't unique in its effect. For example, antihormone therapies used to treat breast and prostate cancer also can decrease bone mineral density. We would like to see clinical trials instigated to study the effects of such cancer therapies on bone health and tumor ...

Proteins important in Alzheimer's, Parkinson's disease travel in the slow lane

...ins in living cultured mouse axons. This clarified unique aspects of slow-protein transport. He found that the "slow" proteins actually showed rapid bursts of movement followed by pauses. This intermittent transport behavior of individual cargoes made the overall population slow and suggests that fast and s...

Bats prey on nocturnally migrating songbirds

... is not without predation risk for passerines. A unique creature is indeed capable of exploiting the formi...wing upon nocturnally migrating passerines appears unique not only among bats but also within the whole animal kingdom. Although carnivorous bats feeding on s...

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