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Tag: "various" at biology news

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

...ich provides a high-intensity source of X-rays for various studies. In their next trip to this facility, the team plans to study FP-23 together with cholesterol, a molecule known to modulate the stiffness of cell membranes....

Researchers find 24 species believed new to science in Suriname rainforest

...es, including large cats such as panther and puma, various monkeys, and a range of reptiles, amphibians, bats, birds, fish and insects indicative of the lush natural environment. In their final report, the scientists call for improved conservation management of the region to address and halt threats from ...

Simulations unravel outer membrane transport mechanism

... in the system, the researchers ran simulations of various scenarios to test which hypotheses were most feasible. Their work relied on detailed crystallographic studies of the molecules provided by University of Virginia researcher Michael C. Wiener. “The good thing about simulations is that you can monit...

Newly found sensing system enables certain bacteria to resist human immune defenses

...se anthrax, strep throat, flesh-eating disease and various types of food poisoning. In gram-negative bacteria—such as those that cause plague and salmonellosis—a sensory and gene regulation system named PhoP/PhoQ protects invading bacteria, and scientists believe if they develop a better understanding of ...

Sun exposure early in life linked to specific skin cancer gene mutation

...bout their risk factors for melanoma and about the various places they had lived. Each patient's UV sun exposure was estimated from their residential history and satellite-base measurements. DNA from the patients' melanomas was then analyzed for mutations. Patients with melanomas that contained the BRAF m...

Researchers shed light on mechanism of action used by anti-cancer drug

...ly undergoing clinical evaluation in patients with various malignancies....

Microbes at work cleaning up the environment

...nc sulfide spheroids. They also studied whether various amino acids induce rapid aggregation in metal-sulfide nanoparticles. The answer was yes in both cases. “This demonstrates an extracellular biomineralization mechanism that is unexpected because it involves the bacteria excreting proteins for n...

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

...gs or DNA for the early diagnosis and treatment of various diseases. The approach represents a potential w...chnique could be used to deliver specific genes to various organs, including the liver and kidneys. "The cells in the organs receiving the bacteria with nan...

Plastic that grows on trees

...or capable of testing 96 metal halide catalysts at various temperatures, discovered that a particular metal — chromium chloride — was by far the most effective at converting glucose to HMF with few impurities and, as such reactions go, at low temperature, 100 degrees centigrade. “This, in my view, is brea...

Potent possibilities for parasite attack

...e past ten years. It is transmitted by the bite of various species of sandfly: wild and domesticated animals - as well as humans - act as a reservoir for the disease....

Mutating the entire genome

...multiple generations of mice with loxP surrounding various large stretches of DNA. Then the first part of the new method is used: The mice are bred with mice that carry the Cre gene so any large stretch of DNA that is located between two short pieces of loxP DNA can be mutated. Because the whole mous...

Blood-brain barrier breached by new therapeutic strategy

...ibodies to the peptide. Currently, doctors use various methods to deliver therapeutic drugs directly into the brain. These methods involve invasive procedures that result in only localized delivery around the site of injection. The new research provides a safe and non-invasive method for delivering thera...

Weizmann Institute scientists develop a general 'control switch' for protein activity

...known. To reveal this function, scientists perform various genetic manipulations to increase or, conversely, decrease the production of a certain protein, but existing manipulations of this sort are complicated and do not fully meet the researchers’ needs. Prof. Mordechai “Moti” Liscovitch and graduate stud...

Researchers develop buckyballs to fight allergy

...of chronic disease in the United States, and while various treatments have been developed to control allergy, no cure has been found. These findings advance the emerging field of medicine known as nanoimmunology. The researchers, from Virginia Commonwealth University and Luna Innovations Inc., a private, ...

Scientists close in on missing carbon sink

... flasks of air collected by research aircraft over various points of the globe for the past 27 years. The air...s around the world, which used them to investigate various aspects of the carbon cycle, but this was the first time that a team of scientists analyzed them to ...

Modified mushrooms may yield human drugs

... might serve as biofactories for the production of various beneficial human drugs, according to plant pathologists who have inserted new genes into mushrooms. "There has always been a recognized potential of the mushroom as being a choice platform for the mass production of commercially valuable proteins," ...

New designer lipid-like peptide with lipid nanostructures for drug delivery systems

...cient to form systems with excellent potential for various biotechnological applications such as the encapsulation of water-insoluble drugs and the delivery of biological active materials.” Currently, many anticancer drugs are difficult to deliver to patients due to their difficulty to be soluble in wat...

How brain pacemakers erase diseased messages

...ed therapy for other movement disorders and are at various stages of testing for the treatment of epilepsy, d...pen when the cells were electrically stimulated at various rates and intensities. In addition to showing how the therapy works, their model of neurons in ac...

Pistachios lower cholesterol, provide antioxidants

...s Gebauer. Standard blood tests determined the various cholesterol levels in the participant’s blood after each diet. Researchers found that 3 ounces of pistachios reduced the amounts of total cholesterol in the blood by 8.4 percent and low-density lipoprotein (LDL), the so-called bad cholesterol, by 11....

Resistant HIV quickly hides in infants' cells

...h transmission affects the responses of infants to various drug treatments. The study, conducted by Deborah Persaud, MD, of Johns Hopkins University School of Medicine and colleagues working throughout the United States, analyzed HIV-infected infants less than six months of age enrolled in a large, mult...

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