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Tag: "made" at biology news

Study of planarians offers insight into germ cell development

...rm cells are formed and maintained. Newmark’s team made a few discoveries related to a gene, called nanos,...exual individuals of this species, the researchers made the surprising discovery that these asexual individuals also express nanos and produce germ cells. S...

MIT biologists solve vitamin puzzle

... may enable the bacteria to withstand "challenges" made by the plants during the formation of the symbiotic relationship. More than 30 genes are involved in vitamin B12 synthesis, and "that's a lot to carry around if you don't need to make it," Walker said. The full implications of the new research ...

Tears reveal some of their deepest secrets to researchers

... why we shed tears. But exactly what our tears are made of has remained a mystery to scientists. A new st...k of as tears, scientists call tear film, which is made up of three distinct, microscopic layers. The middle, watery layer ?what we normally think of as tea...

Ultrasound upgrade produces images that work like 3-D movies

...To our knowledge, this is the first time it's been made possible to display real-time stereo image pairs on a clinical scanner," said Stephen Smith, a professor of biomedical engineering at Duke. "We believe all 3-D scanners could be modified in this way with only minor software changes." The new imagi...

New evidence of 'human' culture among primates

...hing human culture. A strong case has already been made for great apes having a capacity for social learning, but until now there has been no evidence of material culture among the "new world" primates of Central or South America, which include Capuchins. Dr Moura carried out his research in the Serra ...

FDA causes unnecessary scare about common painkillers

...d to recognize current scientific evidence when it made decisions on the safety of nonsteroidal anti-inflammatory drugs (NSAIDs) that are often used to treat the pain or inflammation from arthritis. The most commonly used NSAIDs are ibuprofen (Advil®), naproxen (Aleve®), and diclofenac (Voltaren®). The...

Scientists unravel clue in cortisol production

...riety of its effects,understanding how cortisol is made is essential to producing medications that can alter its production. Scientists at the Georgia Institute of Technology have discovered an important step in cortisol production, finding that although the output of the hormone is continuous, the molec...

Adding radiation decreases breast cancer recurrence

...ion after their surgery. Great strides have been made in breast cancer treatment. Breast conserving surgery in combination with radiotherapy and mastectomy provide women with two good options for their initial treatment. Augmenting surgery with hormone modulating drugs, such as tamoxifen, further improv...

2,000 influenza virus genomes now completed and publicly accessible

...he world have been completed and the sequence data made available in a public database. "This information will help scientists understand how influenza viruses evolve and spread," says NIH Director Elias A. Zerhouni, M.D., "and it will aid in the development of new flu vaccines, therapies and diagnostic...

CSHL research ties harmless viruses to cancer

...i Lazebnik. According to this model, cells can be made cancerous by viruses that fuse cells. Fusion abruptly unites two or three cells under the same membrane, a change that triggers massive CIN and creates diverse cells whose properties change over time. The researchers found that some of these cells ca...

1/3 of sexually active older adults with HIV/AIDs has unprotected sex

... with HIV. Additionally, drugs such as Viagra have made it possible for older adults to remain sexually active longer. Past studies have shown that up to 65 percent of older adults ages 60 to 71 have sexual intercourse. Among older adults who are HIV-positive, according to the Ohio University findings...

Ocean's 'twilight zone' may be a key to understanding climate change

...0 percent of the total carbon in the ocean surface made it through the twilight zone off Hawaii, while 50 percent did in the northwest Pacific near Japan. These sinking particles, often called "marine snow," supply food to organisms deeper down, including bacteria that decompose the particles. In the p...

Brown team finds crucial protein role in deadly prion spread

...ions through drug intervention. If a drug could be made that inhibits this fragmentation process, it could substantially slow the spread of prions, which cause mad cow disease and scrapie in animals and, in rare cases, Creutzfeldt-Jacob disease and kuru in humans. Because similar protein replication oc...

Engineering the heart piece by piece

...also details many other discoveries that have been made by other teams using different cell-growing surfac...g each specimen to be “stretched?using a specially made device that can both apply forces and measure the forces generated when the tissue begins contractin...

Fish can determine their social rank by observation alone, study finds

...dentified simply as A, B, C, D and E. Researchers made sure that the bystander had never met any of his five potential rivals. Although the bystander remained alone in his cubicle and never swam with the others, he was allowed to observe a series of fights between rival pairs--A vs. B, B vs. C, C vs. ...

Nanoparticles can track cells deep within living organisms

... times smaller than the width of a human hair ?are made up largely of perfluorocarbon, a safe compound used in artificial blood. The fluorine atoms in the particles can be detected by tuning an MRI scanner to the unique signal frequency emitted by the perfluorocarbon compound used. Since several perfl...

How T lymphocytes attack

... the interval, the two-photon microscope (see box) made it possible to examine the scene in situ over the first 150 micrometres of the tumour. Each image provided a photograph of the different cell populations, blood vessels and collagen fibres present. And using a series of successive images, it was po...

Cornell researcher helping develop quick, cheap HIV/AIDS test

...or nanovesicles (microscopic, fluid-filled pouches made of phospholipids that can deliver drugs -- also known as liposomes) to enhance the signal. Several other consortium organizations also are working on the similar product development so that the best possible test can be developed in the shortest time...

Satellites shed light on global warming

... the powerful union of multiple views of the ocean made possible by different instruments like those in th...ratures, and this we can now see from measurements made from Envisat," Professor Llewellyn-Jones said. Working like thermometers in the sky, a number of...

Anti-dandruff compound may help fight epilepsy

...s doors on the cell’s surface,?Li says, “then ZnPy made this door both easier to open and stay open longer. It’s like a tunable hinge that helps sticky doors swing freely.? The researchers then tested defective channels that contain the same mutations known in humans to cause mild epilepsy-like seizure...

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