Tag: "earlier" at biology news

Cells Say The Darndest Things

...ts of individual vesicles in the journal Science earlier this year. Cells use vesicles to signal each other in a variety of ways. Such messages include mail to the brain that says "ouch!" from a bumped funny bone. Other messages regulate the female reproductive cycle. By analyzing large numbers of vesicles...

Malaysian State Of Sarawak Bans Commercial Hunting Of Wildlife

...Sarawak voted unanimously to bancommercial hunting earlier this month to prevent further depletion of itswildlife and protect the food source of local communities. The new law ends all commercial sales of animals or animal productstaken in the wild. Up to this point, the wild meat trade was considered one ...

First TableTop Source Of Concentrated X-Rays Built

... at the samespeed as the laser. A major hurdle for earlier attempts at such a setup was that the X-rays tendedto cancel each other out, much like overlapping water waves neutralize eachother if their peaks and troughs coincide. The canceled waves produce very dim,diffuse X-ray patterns on the detector. But...

Researchers Demonstrate That COX-2 Inhibits Angiogenisis In Tumor Cells

...umor," DuBois said. The research builds on earlier work by DuBois and his colleagues thatsuggested aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs) helpprevent colon cancer by inhibiting COX-2, which they found to be elevated incolon cancer cells. However, this new research su...

Researcher Uncovers New Species Of Fungus In Wisconsin Lake

...Gloer,a chemist at the University of Iowa. A year earlier in Mycologia, Fallah, Shearer and Weidong Chen of theIllinois Natural History Survey detailed another new fungus genus and species, Ascovaginospora stellipala, which Fallah found on dead stems andleaves of peat moss in two bogs in the same area of n...

The Shape Of Life: How Does The Computer "Know" When It Sees It?

...tware innovation the year. This software grew from earlier work funded byNASA's biotechnology researchprogram to investigate the structures of proteins. Whereas traditional methods of searching for drugs, or searching for life onMars for that matter, require scientiststo labor through a lengthy process of tr...

Mr. Ples Throws Scientists Into A Tizzy

...served on one side butpartly open on the other. It earlier was thought to have a brain capacity ofmore than 600 cc -- about two and a half cups of water. "Such a large brain wouldbe quite extraordinary because all of the other Australopithecus africanusbrains are in the mid-400 cc range," Conroy says. ...

Jefferson Researchers Provide Leads To Potential Parkinson's Treatment

...ence of the drug's beneficial effects." In earlier animal studies, Dr. Schneider and his coworkers found thatinjecting GM1 ganglioside improved Parkinsonian symptoms, increased levels ofdopamine in the brain and stimulated nerve terminal sprouting. "It possiblysaved damaged dopamine cells from dying,...

'Auditory Scene Analysis' Helps Find Mates

...structure and function of midshipman brains. From earlier studies with Robert Baker at the New York University Medical School, Bass knew that a part of the midshipman male brain, called the hindbrain, contains neurons that constitute a kind of vocal pacemaker. Like a rhythm generator, the pacemaker tells t...

Who Needs Flowers? Transgenic Plants Sprout Embryos On Leaves

...ineeredplants that would put the gene to work much earlier thanusual in the plant's life cycle. One result of the gene's rescheduled activity wasparticularly striking: Some leaf surfaces sprouted tinyclusters of glove-shaped, embryonic tissue. And some ofthose embryos, while still attached to the leaf surfa...

Genetic Screening May Be Tool For Selecting Cancer Treatment, Research Suggests

...ir breaks in the double strand of DNAinside cells, earlier animal studies demonstrated. Several cancer treatments,including some chemotherapy agents and radiation, work by initiatingdouble-strand breaks in DNA. Other researchers had suggested that the effect of BRCA2 ondouble-strand break repair migh...

Scientists Learn How Cells Limit Their Stress

...death." The cell's need for relief accounts for an earlier finding: that the cellproduces high levels of chaperones only briefly, even if stressful conditionspersist. This self-limiting response suggested a feedback loop in whichchaperones cause the shutdown of their own production. Morimoto and his coworker...

News Backgrounder: Duke Primate Center Successfully Fosters Mysterious Aye-Ayes

...y along the track as at the end. And contrary tomy earlier studies, it did seem that the actual presence or absence of prey madea difference." Erickson also is exploring how infants acquire the tapping strategy. Hehas constructed large cavity-filled wood blocks with up to 50 cavities, so thatmothers ...

First Reproducible Cloning Of Mammals From Adult Cells Reported In Nature

...e production of drugs using transgenic animalsthan earlier techniques because of its efficiency of reproducibility and,when used in genetic and embryonic development studies, will shed new lighton the cellular and molecular activities involved in aging and diseasessuch as cancer, AIDS, diabetes and multiple ...

Mechanism Discovered For Determining Early Vertebrate Body Plan: New Zebrafish Mutants Afford Deeper Look Into Embryonic Patterning

...ortant event happens muchearlier, about five hours earlier in the development of zebrafish. Time-wise,this corresponds in mammals to a day to a couple of days earlier, a stagesometimes crucial to catching a rare glimpse of the earliest stages ofvertebrate development. This work is described in a July...

The Best Molecular Snapshot Yet Of Cells Affected By Alzheimer's Disease

...t toward understanding what ishappening much, much earlier in the brains of people who havethis disease. It's no longer a hit-and-miss approach. "There is good reason to be excited about this technology." In Alzheimer's disease, nerve cells throughout the brain die-- but not all cells, not even all...

System Offers Breath Of Relief To Workers

...cer and an inflamed pancreas. A field test earlier this year at the Toxic Substances Control ActIncinerator in Oak Ridge, Tenn., checked workers for exposure to benzene. Finalresults will be reported later this summer, but preliminary results show workersreceived exposures lower than what a person w...

Grassland Birds Are Not Nesting In Non-Native Grasses

.... Also, Haas says, cool seasongrasses can be mowed earlier than warm season grasses, "before the first nestshave fledged." The researchers are also looking at whether insect populations differamong grass varieties. "A community of native plants support native insects. Theexotic grasses may not suppo...

Antisense Therapy Prevents Burkitt's Lymphoma In Mice

...at each disease at its point of origin." In earlier work, Dr. Wickstrom and his colleagues prevented tumorformation in mice predisposed to Burkitt's lymphoma. In the longest test ofantisense DNA therapy in animals to date, three-week-old mice without tumorswere treated for six weeks with a gene-target...

Forecasting The El Niño-Driven Ebb And Flow Of A Rogue Mosquito

...matologist Jonathan Foley,the model is built on an earlier model developed by the U.S. Department ofAgriculture. It was described to scientists here today (Aug. 4) at a meeting ofthe Ecological Society of America. "It's a mosquito model, not a climate model," said Hopp, but it uses climatedata such as preci...

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