Tag: "reaching" at biology news

Montana State University Scientist Contributes To Latest Dinosaur Discovery

...face, straight pores and distinctive shell "units" reaching from the inside to the outside of the shell. She could alsosee horizontal growth lines in the shell that look like tree rings. Those growthlines, as well as the general appearance of the shell, told her the sample was"minimally altered," she said. ...

Could A Nasal Vaccine Finally Get Rid Of The Black Death?

...hem being brokendown by enzymes in the body before reaching their target. The researchers say mice whose noses and throats were treated with thevaccine were fully protected from inhaled Y. pestis (Vaccine, vol 16, p 2000).Tests showed that the capsules released the proteins for several weeks, and them...

Genetically Engineered Mice Exhibit Anxiety, Offering Insight Into Role Of Serotonin In Brain

...m is determined by its success, or lackthereof, in reaching its target receptors, and the response that these receptorshave to the neurotransmitter--either stimulating or inhibiting its activity. While unusually elevated or inhibited serotonin activity has been implicated inmany psychiatric disorders, scienti...

How Nerve Cells Get In Touch - A Molecular Model Of Synapse Formation And Retrograde Signalling In The Brain

...sin postsynaptic membranes, its extracellular tail reaching into the cleft thatseparates postsynaptic nerve cells from the presynaptic axon terminal. Interestingly, the extracellular part of Neuroligin 1 binds to another group ofcell adhesion molecules, the b-Neurexins. Both, Neuroligins and b-Neurexins areth...

Gene Knockout Prolongs Ovarian Lifespan In Mice

...aining follicles as do thenormal mice. Among mice reaching the very advanced age of 20 to 22 months,normal mice have exhausted their supply of both oocytes and granulosa cells,while the Bax-deficient mice maintain hundreds of follicles with functioningcells of both types. Despite their healthy supply of ov...

Harbor Branch Web Developers Bring Adventures @Sea To Every Desktop

... these outlandish photos of his researchassistants reaching into the water and snatching up baby sharks for tagging andgenetic sampling. When Mary told me she wanted to try covering stuff like thatlive over the web, I was instantly sold on the idea. We got back in touch withDr. Gruber and immediately starte...

Chelation Therapy May Alter Immune System

...was found effective in reducing the amount of lead reaching the rat embryos(through the placenta) and in young, nursing rats (through mother's milk). Thechelation therapy for rats also reversed several harmful effects of leadexposure, such as altered body weight and spleen weight in rat pups andincreased lev...

Oregon Scientists Discover A Second Blood-Brain Barrier; Important Finding For Patients With Brain Cancers And Neurological Disorders

...eps drugs such ascancer-fighting chemotherapy from reaching the brain in patients undergoingtreatment for brai...r.Clinicians may incorrectly assume that a drug is reaching its target in thebrain when in fact it is being stopped at the second barrier. ...

Tip Sheet: Papers At IADR Meeting

...istry, are in the early stages of researchaimed at reaching that goal. One of the first steps is to find ways ofdelivering the proper genes into the body and getting them to work as theyshould. Franceschi and Rutherford are working with genes for bone morphogeneticproteins, which induce bone formation. In ...

Isle Royale Wolves Bounce Back

...ves now, and an increasing numberof adults who are reaching old age. Both make easy prey for wolves," heexplains. Peterson says the park's East and Middle packs each produced six pupsduring the past year, so that these packs now number 10 wolves apiece. "Webelieve the West pack produced three offspring, but n...

INDOEX Researchers Document The Impact Of Pollutants On Climate Processes Over The Tropical Indian Ocean

...tion, a process that reduces the amount ofsunlight reaching the ocean surface, thus reducing the amount of solar energythat would otherwise heat the earth-atmosphere system. In the polluted INDOEXregion, the haze particles reduce the solar radiation absorbed by the oceansurface by as much as 10%. The airborne...

Fossilized Emu Eggshells Give Clues To 65,000 Years Of Vegetation And Climate Changes In Australia

...chanism and thus diminished the amount of rainfall reaching what is now the arid Australian interior. The influence of humans with their recurrent fires has been suggested as the cause of extinction for a least one Australian megafauna, the flightless bird Genyornis newtoni at 50,000 years ago (Science, vol. ...

Media Advisory: 1999 Spring Meeting -- Updated Press Conference Schedule

...toms were pushed away by the pressure of sunlight, reaching the vicinityof the Earth on November 19th. This cloud of lunar gas was "gravitationallyfocused" into a narrow tail that was photographed using a sensitive camera atthe Boston University Station, McDonald Observatory, in Fort Davis, Texas.Experimental...

Researchers Propose A Revolutionary New Theory About The Way Cells Communicate

...d, in so doing, detected long, cellular extensions reaching fromthe unspecialized, or "undifferentiated," cells of evolving tissue to thesignaling centers of distant, special cells within the wing that orchestratedevelopment. What these extensions, which they named cytonemes, do once they reach thesesignalin...

Massive pollution documented over Indian Ocean

...perturbed." A reduction in the amount of sunlight reaching the ocean surfacecan also have a detrimental effec...osphere, but it also reduces the amountof sunlight reaching the ocean," Ramanathan said. "So, it is just too early to say at this point whether the net effect ...

Environmental Health Institute report concludes evidence is 'weak' that electric and magnetic fields cause cancer

...otherdifficult issues." To assist NIEHS in reaching its conclusions, several panels ofscientists reviewed the data in open, public hearings. A major panel ofscientists ? many of them EMF researchers ? was assembled in a suburb ofMinneapolis, Minn., last June to advise NIEHS. The panel rejected EMF a...

Damaged spinal cord found to have greater potential for nerve regrowth than thought possible

...said, "Not only do the regenerating axons stopupon reaching the scar, but they change the shape of their tips and become 'dystrophic' with malformed endings. This is thehallmark of regeneration failure." Silver said, "The cell body of an injured nerve does try to regenerate its axon, but it gets stuck. The de...

Astrobiologist to hunt small game in Siberia

...e very big, very tall, Hoover explained, with some reaching heightsof tens of meters. "If we can find a suitable pingo, I hope to obtain samples of the interior ice.What kind of microorganisms are in there? Are there rocks that get trapped andform cryoconite holes?" Cryoconite holes can be temporary glacial m...

Forest fires a burning issue

... burning was limited to basal ground cover without reaching the treecrowns. It will notbecome evident until next summer how vegetation and insect life have reacted tothe fire. SwedishEPA hopes that some of the more than 30 red-listed insects, e.g. sooty blackflatheaded borer, thecarabid beetle Agonum quadripu...

Jefferson scientist hopes to answer the question, 'Why is it so hard to quit smoking?'

...ink of trying to quit smoking. The dailyroutine of reaching for a cigarette after morning coffee is too ingrained.Grabbing a smoke after lunch, or after a hard day at the office -- there'snothing quite like a cool long drag, and the expected nicotine buzz. You canquit anytime you like. For many, howev...

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