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Tag: "with" at biology news

Reconstructing the biology of extinct species: A new approach

...l adaptive mechanism linking a species' locomotion with the sensory systems that process information about...canals to locomotion. These structures are filled with a fluid, which moves within the canals when the animal moves. The fluid's movement is sensed by spe...

Human genetic 'deserts' are teeming with significant life

...eviously thought to be deserts are in fact teeming with life, a scientist will tell the annual conference ...ute, part of the US National Institutes of Health, with the aim of identifying all functional elements in the human genome sequence. The pilot phase is focu...

Children of smokers have more than 5 times higher levels of a nicotine toxin

... from inhaled smoke to get rid of it. Sleeping with parents and lower temperature rooms were also associated with increased amounts of cotinine. Cotinine was measured in 100 urine samples taken from infants ag...

Prey not hard-wired to fear predators

...ior and flight observed in the same species living with wolves, bears or tigers. For example, elk in the mountains of Siberia—who subsist alongside tigers, wolves and bears-- responded five times faster to the recordings than did elk in Rocky Mountain National Park (Colorado) where major predators have ...

3-D ultrasound scanner provides in-depth view of the brain

...s are also expensive and require a dedicated space with special surgical tools that can be used in close p...em to shift the orientation of the ultrasound beam with respect to the probe, he said. Rather than capturing a side view, the brain probe "looks" straight a...

CU study reveals why starling females cheat

... mates for a variety of reasons. Some females mate with subordinate males from within their social group w...oup when young, most males live their entire lives with their families and, therefore, are usually related to the chicks. By helping the chicks survive, the...

Electric fish conduct electric duets in aquatic courtship

...d communicate their species, sex and social status with other fish. It is also the first study to successf... Wong, noting that the males also serenade females with lower frequency "creaks." The researchers developed custom software that offers new techniques fo...

Surprising origin of cell's internal highways

... of microtubules in human retinal epithelial cells with a fluorescent molecule, videotaped their growth an...cess. They found that proteins normally associated with the plus ends of microtubules, called CLASPs, localize to a specific compartment of the Golgi (the T...

The mouflons of the Kerguelen archipelago

...back to the son of the founders,” said Denis Réale with a smile. “We were even able to obtain genetic mate... elimination, over the generations, of individuals with low genetic diversity. In small isolated populations, related individuals are likely to reproduce am...

Researchers develop buckyballs to fight allergy

...dified the buckyballs so that they were compatible with water. The new study findings were published onlin...sible for causing allergic response and are packed with granules containing histamine. They are present in nearly all tissues except blood. When mast cells ...

Turn-ons and turn-offs for neurons

...rain becomes active. These nerve cells communicate with each other by chemical and electrical impulses to compute incoming sensory information and integrate it via distinct brain regions. With 20,000 - 25,000 genes in our genome, most also expressed in neurons, there is now little doubt that neurons respo...

Helping chlorine-eating bacteria clean up toxic waste

...tt's and Zinder's work, in continued collaboration with them. She is partnering with Gene Network Sciences (GNS), a firm specializing in computer simulation of biochemical processes, to...

Study identifies 5 genetic themes key to keeping stem cells in a primitive, flexible state

...ked for genes whose expression was also correlated with the master stem cell regulator gene Oct4. They also applied very rigorous analysis methods, using data from StemBase, the largest stem cell gene expression database in the world. Designed by bioinformaticist Dr. Miguel Andrade, the database includes ...

Male circumcision overstated as prevention tool against AIDS

...ute communities are typically very highly infected with the virus themselves, and because of the large num...mic far in excess of any other region of the world with some African countries’ prevalence rates exceeding 25% of the adult population and tens of millions ...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...open label Phase 1 study, conducted in 12 patients with advanced Parkinson’s disease demonstrated both a l...rted the clinical outcomes to be very encouraging, with treated patients showing significant improvement in both the “on” and “off” states of their illness ...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...squito’s newly-sequenced genome which are involved with immunity. By working to understand as much as possible about these genes, and the way they interact with specific pathogens, we hope to gain a more complete understanding of the mechanisms by which a patho...

Ancient retrovirus sheds light on modern pandemic

... immunity to this ancient retrovirus first emerged with the sequencing of the chimpanzee genome. "When the... and so humans share many retroviral DNA fragments with their primate cousins. Such vestiges of primitive infection, rendered inactive by eons of genetic mu...

Scientists close in on missing carbon sink

...he tropics. "Our study will provide researchers with a much better understanding of how trees and other...mputer models that combine worldwide wind patterns with measurements of carbon dioxide taken just above ground level. The models indicate that northern fore...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...nt Biology, combined genetic and chemical analyses with more conventional paleontological study of the mor...to trace the ancient wolves’ genetic relationships with modern-day wolves, as well as understand their role in the ancient ecosystem. “Being able to say...

AAAS decries latest stem cell veto

...world’s largest general scientific society, stands with a broad coalition of Americans spanning all partie...ience (AAAS) on Wednesday expressed disappointment with the decision by President George W. Bush to veto a landmark stem cell research funding bill. The ...

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