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Tag: "isolated" at biology news

Salk researchers make fast strides towards understanding how our body controls walking

...is colleagues performed electrophysical studies on isolated spinal cords. They found that, while normal spinal cords showed a standard pattern of activity that mimics walking, the rhythmic pattern in spinals cords lacking functional V1 neurons had slowed to a crawl. "From what we knew about these cells, we w...

Yale researchers find environmental toxins disruptive to hearing in mammals

...the inner ear. In his previous study using TBT on isolated cells only, Santos-Sacchi had proposed that the ear's ability to perceive sound would be compromised. He also speculated that whales and other marine mammals exposed to TBT would have altered sound localization abilities. The present findings confirm...

Anemone genes reveal versatile building blocks for body plans

...evolution of body-plan patterning, the researchers isolated a particular set of genes from a tiny translucent cnidarian, the starlet sea anemone, Nematostella vectensis. The genes were the anemone's version of genes known to be responsible for organizing the dorso/ventral axis in bilateral animals. Matus an...

Record bonefish

...More research will be needed to see if this was an isolated phenomenon or a newly discovered behavioral pattern," Ault said, adding that the prospect of bonefish crossing the Gulf Stream has profound implications on the population's prospects and is an exciting breakthrough. This is the reason why BTU invest...

Discovery may speed forest biotechnology

...ntists studied the genes CO and FT that were first isolated from the annual plant Arabidopsis. The genes in that plant are responsible for the day-length regulation of flowering. They discovered that the same genes had been conserved through millions of years of separate evolution and also performed similar f...

New human retrovirus originated in mice

...etect viruses from tissue samples, the researchers isolated genetic material from each sample and tagged the g...cell the virus is infecting. When the researchers isolated and sequenced the genome of the virus, they found that it was a xenotropic virus ?one that can only ...

Gene discovery may shed light on kidney disease

... with Alagille syndrome have very mild symptoms or isolated problems, while others may have severe, life-threatening heart or liver defects. Both the JAG1 and the NOTCH2 genes participate in the Notch signaling pathway. JAG1 codes for the ligand Jagged1, a signaling protein that triggers receptors in the pa...

In a technical tour de force, Salk scientists take a global view of the epigenome

...sis genome like floor tiles. The researchers first isolated all methylated DNA from plant cells and located where those fragments fell on the array. Then they determined which genes were active and which ones weren't in order to compare gene activation with the methylation pattern. The investigators saw sig...

Widespread elephant slaughter discovered in Chad

...hus security is low and borders are porous in this isolated region. Fay took information of the massacres to Chadian and EU officials, who are enacting an emergency plan with contributions from the African Parks Foundation and others, which will increase aerial surveys and extend patrols outside the park thr...

Antarctic Treaty Meeting moves to protect frozen continent from non-native species

...ish Antarctic Survey, "In the past, Antarctica was isolated with a very harsh and cold environment, which made it very difficult for non-native species to establish. However, more and more people are travelling to the continent, most of them on ships. Evidence from other parts of the world has shown that ther...

Stanford snake venom study shows that certain cells may eliminate poison

...alli and Metz first did experiments in vitro using isolated sarafotoxin 6b with mast cells from mice. "It work...id experiments using the whole venom, not just the isolated toxin. Some of the mice they worked with were genetically deficient in mast cells, while others, cal...

UF scientists discover evolutionary origin of fins, limbs

...urred at a molecular genetic level." Researchers isolated genes from the spotted catshark, a type of slow-moving shark from the eastern Atlantic Ocean. By studying the activity of a dozen genes in shark embryos, they determined shark median fin development is associated with the presence of genes such as Ho...

Innocuous intestinal bacteria may be reservoir for resistance

...icant number of non-pathogenic, commensal bacteria isolated from cow manure contain the same antibiotic-resistance genes as those found in multi-drug resistant Salmonella strains found on the same farm. In addition, isolation of antibiotic-resistant Salmonella appears to be associated with whether or not com...

Insect predation sheds light on food web recovery after the dinosaur extinction

...r its generality. "Temporally and geographically isolated occurrences of severely unbalanced food webs may be a widespread feature of ecological recovery from mass extinction, resulting from instability, incumbency and opportunism in drastically simplified ecological landscapes," say the authors. ...

DOE JGI finishes 100th microbial genome

...tabolic pathway to do the job. This microbe, while isolated from a fresh water mud sample, also lives in the rumen of cattle where cellulose and other polysaccharides are digested. "We are delighted that the DOE JGI's 100th genome is a microorganism that one of our UMBI faculty members has been studying to ...

Hopkins researchers develop new tool to watch real-time chemical activity in cells

...g development operations test chemicals on enzymes isolated from their normal environs and then take further s...nsor is made from a protein that glows, originally isolated from jellyfish. When PKA is turned off, the biosensor glows blue. When PKA is turned on and is physi...

New tiger report release: Tiger habitat down from just a decade ago

...s are highly vulnerable to extinction in small and isolated reserves. Half the 76 landscapes can still support 100 tigers or more, providing excellent opportunities for recovery of wild tiger populations. The largest tiger landscapes exist in the Russian Far East and India. Southeast Asia also holds promise...

When the going gets tough, slime molds start synthesizing

...bench, Austin and Noel lab manager Marianne Bowman isolated Dictyostelium DNA encoding the type III PKS domains and not only determined their structure, which indeed resembled a plant PKS, but also showed that one of them, called Steely2, made the chemical scaffold of DIF-1 in a test tube. All that was left w...

Cornell researchers find serious fish virus in Northeast for first time

...te Department of Environmental Conservation (DEC), isolated the virus in round gobies that died in a massive fish kill in the St. Lawrence River and in Irondequoit Bay, which is on the southern shore of Lake Ontario near Rochester, N.Y. VHSV was also found in a muskellunge from the St. Lawrence River in May. ...

HIV infection requires an accomplice: B cells with special protein direct HIV to T cells

...and necessary for T cell infection. B cells were isolated from blood samples obtained in 33 healthy subjects and 20 adult patients with HIV from the Multicenter AIDS Cohort Study (MACS). Researchers found about 8 percent of these cells expressed DC-SIGN. In one set of studies involving cells from the hea...

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