Tag: "heads" at biology news

MSU Scientists Eavesdrop On Bacterial

...hout cell-cell signaling," said Bill Costerton,who heads the MSU Center for Biofilm Engineering. Today's report of cell-cell signaling represents the first words in whatmay be a large chemical vocabulary dictating how bacteria do what they do inbiofilms and why. The paper is the first to report on...

Purdue Herbarium -- A Noah's Ark For Egyptian Plants

...," says Bill Chaney, a physiological ecologist who heads the Purdue team. "And if you don't know what you started with, you won't know what you've lost." On this trip, the group will just begin to inventory the plants that populate the desert. They'll travel by camel or Land-Rover to the desert interior, c...

Too Hot To Handle

...t could becomea problem," says Carl Fliermans, who heads a team investigating the phenomenonat the Savannah River Technology Center. The water which shields stored fuel rods is supposed to be sterile andfree of the nutrients that bacteria need to grow. "We've had these systems goingsince the mid-19...

FDA Approves Hopkins-Designed Implants To Restore Lost Voices

...ly spring. The implants, shaped like the heads of tiny hammers, are made ofhydroxylapatite, a chalk-like substance that melds into the body's tissue overtime. Available in five sizes, the devices add volume to a weakened vocal cord,pushing it to the center of the voice box so it can meet its cou...

Master Molecule Forms Brains In Frogs And Elbows In Mice

...am found that lab frogs formed exceptionally large heads after embryos were injected with Noggin messenger RNA (which led to the overproduction of Noggin protein). Years ago, Harland had originally chosen to work with amphibian embryos largely because of their size and ease of surgical manipulation. Since ...

Gene Linked To Glaucoma, Hydrocephalus, And Other Birth Defects

...orkhead, which whenmutated results in larvae whose heads do not develop properly. "We began looking in mice for genes that are related to the fly forkheadgene, and we found a number of them," Hogan said. "There are probably about 50members of this family, but we started focusing on one of them, whi...

Security Code Helps Immune Cells Attack Foe And Spare Self

...methods failed to reveal this, so noone could make heads or tails of it," says lead researcher Paul M. Allen, Ph.D.,the Robert L. Kroc Professor of Pathology at Washington University School ofMedicine in St. Louis. "We tried a different approach, and an elegant solutionto this question emerged." O...

Gene Discovery Provides Insights Into Epilepsy

...r name fromthe way in which the animals toss their heads during the 100 or more seizures,each lasting about 6 seconds, they experience each hour. Epilepsy is a neurological disorder that occurs in about 20 forms and affectsapproximately one percent of the U.S. population. Absence, or petit mal,epilepsy oc...

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

...oleman, a professor of neurobiology and anatomywho heads the University's Alzheimer's Disease Center, one of 27nationally recognized Alzheimer's centers funded by NIH. Through statistical analysis, the team was able to neatlydivide up the cells into two camps: those that came from patientswith the dis...

French Researchers Breed Flightless Ladybirds As Pest-Killers

...ys Mike Majerus at theUniversity of Cambridge, who heads a group researching the population geneticsof ladybirds. "Field trials are necessary to find out how efficient this is, andnot just in greenhouses." But Majerus also urges caution. "This is a very hardy ladybird-verytolerant of adverse winter...

Monkeys Have Numerical Abilities, Two Columbia Psychologists Report

...an think without language," saidProf. Terrace, who heads Columbia's Primate Cognition Laboratory. "In ourcurrent and previous research, we have shown that animals solved complexproblems without help from external cues." Added Ms. Brannon, "Though monkeys do not recognize the word 'two' orthe symbo...

Ancient Antarctic Environment Rocked By Volcanic Eruptions

...dation (NSF) is a partner. Scott Borg, who heads the geology and geophysics program for NSF'sAntarctic Science Section, said the rock cores, drilled from the sea floor offthe Victoria Land coast near Cape Roberts, show surprising evidence of enormousvolcanic eruptions. These eruptions are believed...

Old Growth Forests May Shed Light On Worldwide Greenhouse Effect

...ool of Forestry and WoodProducts at Michigan Tech, heads a team of MTU researchers whose aim is todetermine the role of Pacific Northwest landscapes in the global carbon budget.They measure the fluxes of carbon dioxide, water and energy budgets at severalmanaged forests in the Pacific Northwest to offer ba...

First Complete Fossil Of Fierce Prehistoric Predator Found In South Africa

...the mostferocious predators ever, Ward said. Their heads appeared somewhat dog-like,with large saber-tooth upper canine teeth up to 4 inches long. Though they had asomewhat mammalian appearance, their eyes were set at the sides of the head likethose of a lizard, and the body was probably covered with scale...

Technique Measures Muscle Contraction At Molecular Level

...he actin.Muscle contraction occurs when the myosin heads rotate and pull on the actinfilaments." The details of how the myosin heads move are not well understood, however. "Theleading model says themyosin heads act like little lever ...

New Gene May Help Scientists Understand More About How the Body Grows

...king derrière genefunction developed normal heads but only had disorganized tissue where the trunkan...ioning and found thatembryos developed with normal heads but with only disorganized tissue from theneck down, including no muscle, no obvious neural tube, or...

Heat-Shock Vaccine Stops Bacteria Dead

...len and Morris Mauerberger Chair in Immunology and heads both the Weizmann's Robert Koch Minerva Center for Research in AutoimmuneDiseases and the Center for the Study of Emerging Diseases in Jerusalem. Prof.Fridkin holds the Lester B. Pearson Chair of Protein Research. The study waspartially funded by Pep...

Scientists Discover Important Molecular Link That Allows Cells To Form Blood Vessels

...s to 'know they've arrived'," explainedDaniel, who heads the Center for Vascular Biology as well as the Cancer Center'sHost-Tumor Interaction Research Program. "That kind of targeting function is necessary for vascular development and forangiogenesis (development of new blood vessels) to support tumors or ...

Engineered Corn Can Kill Monarch Butterflies

...e, the second generation of adults has emerged and heads north to areasincluding the Midwest Corn Belt. Monarch caterpillars are feeding on milkweedduring the period when corn is shedding pollen, Losey says. Thus "they may bein the right place at the right time to be exposed to Bt -corn pollen." Says Lo...

New Census report shows exponential growth in number of centenarians

...ntury. It wasprepared by Victoria A. Velkoff, who heads the Aging Studies Branch at theCensus Bureau. Specifically on the very elderly, the NIA has supported other research projects,including a Massachusetts study of centenarians by Thomas Perls, M.D., M.P.H.,of Harvard University and a study of centena...

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