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Tag: "patterns" at biology news

Junk DNA may not be so junky after all

...A, follows few rules for organization and sequence patterns and therefore is more difficult to study. "The difficulty with human genetic approaches to common disease is that we lack the power to precisely localize DNA sequences that are associated with disease, often leaving us immense stretches of DNA to lo...

Infused spleen cells found not to impact islet recovery and reversal of type 1 diabetes in mice

...A, follows few rules for organization and sequence patterns and therefore is more difficult to study. "The difficulty with human genetic approaches to common disease is that we lack the power to precisely localize DNA sequences that are associated with disease, often leaving us immense stretches of DNA to lo...

Infections could contribute to adult brain tumours

...hood cancer in North West England. This discovered patterns in the diagnosis of two types of cancer - leukaemia and brain tumours - in that they tended to occur together at similar times and geographical locations. Dr McNally, who also works with Newcastle University's School of Population and Health Scien...

DNA conclusive yet still controversial, Carnegie Mellon professor says

...statistical tools for finding associations between patterns of genetic variation and complex disease. ...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...designed to simulate and predict ocean circulation patterns in the California coastal region. Preliminary resu...example, the researchers observed unusual movement patterns of sea lions associated with anomalies in sea surface temperatures. Normally, upwelling of cold deep...

MIT: Oceans are a major gene swap-meet for plankton

...nder what conditions they thrive. Their geographic patterns suggest causal relations with environmental variables such as temperature, predators, light and nutrients. Remarkably, despite centuries of oceanic research, tiny Prochlorococcus wasn't even known to exist two decades ago. It was discovered in 1985 ...

Diverse tropical forests defy metabolic ecology models

...o test these predictions, and to see whether these patterns are really similar across all these forests," reme..., and, in that case, observed growth and mortality patterns were consistent with predictions. Similarly, tree size distributions corresponded more closely to a ...

The Amazon in 2050: Implementing the law could save a million square kilometers of rainforest

...rapher and modeler. He has studied Amazon land-use patterns for the last 12 years, developing computer programs that simulate land-use change. He is a professor at the Universidade Federal de Minas Gerais, where his teaching interests include ecosystem dynamics and modeling and digital cartography, and direct...

Researchers use dirt to stay one step ahead of antibiotic resistance

...ant to antibiotics are identical to the resistance patterns seen in patients. These soil-dwelling bacteria also play a central role in the treatment of infectious diseases. Approximately two-thirds of all known antibiotics are produced by bacteria called actinomycetes, commonly found in soils, compost, and ...

Warming trend may contribute to malaria's rise

...s drug and pesticide resistance, changing land use patterns and human migration also may play roles, climate change cannot be ruled out. "Our results do not mean that temperature is the only or the main factor driving the increase in malaria, but that it is one of many factors that should be considered," Pas...

The evolution of food plants: Genetic control of grass flower architecture

...ds are borne on axillary branches, whose branching patterns dictate most of the variation in form seen in the grasses. Maize produces two types of inflorescence; the tassel (male pollen-bearing flowers) and the ear (female flowers and site of seed or kernel development). The tassel forms from the shoot apical...

Warbling whales speak a language all their own

... encoding and transmission--to analyze the complex patterns of moans, cries, and chirps in the whales' songs for clues to the information being conveyed. Buck is an electrical engineer who specializes in signal processing and underwater acoustics at the University of Massachusetts Dartmouth, and Tyack is a bi...

Anthrax inhibitor counteracts toxin, may lead to new therapeutics

...am is also polyvalent and recognizes these surface patterns on the anthrax toxin molecular structure, allowing...ted that a therapeutic inhibitor displaying random patterns can recognize a target if its statistical characteristics match those of the toxin target. According...

'Nano-keys' bind cell receptors and trigger allergic reactions

...re are 25,400 microns in an inch), are arranged in patterns that contain antigens and cause IgE-receptors to cluster when the cells attach to the surface. This activates the cell's inner machinery. Said Baird: "In this way, we can control what the cell sees. The cells are binding to the engineered surfaces ...

Gene patterns in white blood cells quickly diagnose disease

...mamieh. They are also looking for gene expression patterns that could help determine severity of exposure While the technology for conducting these tests in the field is still in development Hammamieh and her colleagues foresee a day when hand-held devices could be used at the site of a suspected bioterror...

How taste response is hard-wired into the brain

...information to encode taste, or that the timing of patterns of taste information encodes taste. In their studies, the researchers explored the behavioral effects of activating fly taste neurons that had either of two chemical taste receptors on their surface. In earlier studies, the researchers had shown th...

How 'hot' emotional brain interferes with 'cool' processing

...n the new study, the researchers observed the same patterns of activation and deactivation of the regions. The emotional images produced greater activation of the ventral system and deactivation of the dorsal system than did the neutral or scrambled images, they found. But most importantly, they found graded...

Sea coral's trick helps scientists tag proteins

...actin and tubulin filaments and found the expected patterns of intracellular protein distribution. Dendra belongs to a small family of green-to-red PAFPs. The first protein in this family, Kaede--which is Japanese for maple leaf--was discovered by Japanese researcher Atsushi Miyawaki four years ago. "All kn...

Scientists seek to unwrap the sweet mystery of the sugar coat on bacteria

...tly labeled, Mahal and her colleagues can read the patterns of glowing dots and determine which sugars coat the bacteria. The microarray technique worked fast enough that the researchers were able to see the sugar coating change over time in the neonatal meningitis strain of E. coli. "Over time, the lectins...

Neuroscientists discover new cell type that may help brain maintain memories of smells

...er is excited about the prospect of unraveling the patterns of synaptic connections made by the other five named but as yet unstudied brain cells in the olfactory bulb. ...

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