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Tag: "analyze" at biology news

Study finds the air rich with bacteria

... these thousands of gene sequences, meaning it can analyze an air sample and list every type of organism present. To conduct the study, daily air samples were taken at several locations in San Antonio and Austin over a 17-week period. The samples were sent to Berkeley Lab where they were analyzed by the ...

Professors to develop hand-held pathogen testing device

...s technology is rugged and highly parallel; it can analyze lots of marker genes in a lot of samples, together with significantly lower false positives," Hashsham said. He said the hand-held testing device could be used anywhere that cost-effective testing of food, water or air is needed for a number of pa...

Slow brain waves play key role in coordinating complex activity

...lves areas all over the brain that hear the sound, analyze it, extract the relevant information, formulate a response, and then coordinate your lips and mouth to speak. We have no idea how information moves between these areas." By measuring electrical activity in the brains of pre-surgical epilepsy patient...

Nanotech tools yield DNA transcription breakthrough

...ersity of New Jersey. "These methods enabled us to analyze and manipulate individual molecules of the machine, one-by-one, as they carried out reactions." The discoveries significantly advance our understanding of the structure and function of the molecular machine that carries out transcription, setting ...

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

...c sites, which is why the researchers were able to analyze enough data without having to sequence the entire Neanderthal genome. ...

Lab-on-a-chip could speed up treatment of drug-resistant pneumonia

...ofluidic" lab-on-a-chip designed to manipulate and analyze bacteria without growing them first. Samples are first washed out of the patient's lungs with saline solution in a procedure called bronchoalveolar lavage. The organisms are then separated, suspended in a specially designed fluid, and pumped into the...

Scientists explore how complex organs develop from a simple bud

...ring animal development are revealed. The articles analyze how branching morphogenesis occurs in different organ systems in the same species. They also compare the process between simple and complex organisms. Key questions within the reviews --pertaining to the maintenance and repair of cells within adult...

Nanoscale microscope sheds first light on gene repair

...damage," said Bewersdorf. "Moving forward, we will analyze the localization of the H2AX clusters relative to other nuclear components." ...

Brown scientists map structure of DNA-doctoring protein complex

...oteins, the complex is too big and too flexible to analyze through standard methods such as X-ray crystallography. Sun used fluorescence resonance energy transfer or FRET, a technique typically used to study small protein complexes in a solution. This time, Sun used FRET to study large protein complexes i...

Researchers identify a key regulator for skin stem cells

...l in skin cells. They then used DNA microarrays to analyze which genes were affected when Tcf3 was activated. Microarrays, also known as "gene chips," enable scientists to determine the activity of thousands of genes at once. "When we compared the list of genes that Tcf3 repressed or induced, we found th...

A buffet for early human relatives

...ind away at the tooth, collect the powder and then analyze that," Passey says. In the past decade, resear...g Cerling have used "laser ablation" to remove and analyze tooth enamel samples from the large, fossilized teeth of prehistoric horses, rhinos and elephants to...

A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide

...toxicity to the developing human brain in order to analyze how that toxicity had been first recognized and how it led to control of exposure. They found a similar pattern in how the risks of each substance were documented: first, a recognition of adult toxicity and episodes of poisoning among children, follo...

A valuable fly for research into disease

...rged as one of the most effective model systems to analyze the function of genes whose human homologues play a crucial role in many diseases, including neurological, metabolic and developmental disorders, cancer, cardiovascular failure, and pathologies of the visual, auditory and immune systems. A growing n...

Weighty viruses

...rized ion trap of their own devising to accurately analyze the masses of individual, intact viruses. Previous methods for determining the masses of viruses had a margin of error of ±15%, which made them too inaccurate to ensure the resolution of small differences in mass. A team led by Huan-Cheng Chang has ...

Uncovering DNA's 'sweet' secret

...ular purpose." "For a chemist, it makes sense to analyze the origin of these molecules." One particular curiosity: how did DNA and RNA come to incorporate five-carbon sugars into their "backbone" when six-carbon sugars, like glucose, may have been more common? Egli has been searching for the answer to th...

Protein structure initiative launches new resources for the scientific community

...samples and image crystals; Enhanced software to analyze structural data and create higher-resolution images; More accurate screening processes to detect crystals suitable for imaging; and Improved systems for making proteins from machines, instead of cells. These developments have reduced the...

German researchers develop first non-invasive test to measure skin aging

...ent's dermis need to remove a sample of tissue and analyze it in the lab, under a microscope or by other methods. In particular, it is impossible to monitor variations in the very same spot as aging progresses. "You would like to measure changes in collagen content over time," Dr. Koehler said. "Moreover, cu...

The effects of smoking on fractures and ligament injuries

...ed to cigarette smoke. This was the first study to analyze the molecular and cellular mechanisms of fracture healing in mice exposed to smoke. The authors note that while the study shows a clear relationship between smoking and cartilage formation, smoking probably has other effects on fracture healing, wh...

Mutant gene causes severe kidney disease in infants

...n life." U-M scientists used DNA microarrays to analyze blood samples from 26 families around the world who had children diagnosed with steroid-resistant nephrotic syndrome. After eliminating known mutations, the study team was left with DNA from 12 children with the disease. All 12 had inherited recessiv...

One-of-a-kind imaging probe reveals secrets useful for drug discovery

...stances to help cure diseases. The challenge is to analyze material that is smaller than the proverbial gnat's eyelash. But using a refined version of nuclear magnetic resonance technology, or NMR, scientists have unlocked secrets hidden in tiny amounts of venom taken from spindly insects called common two-...

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