Tag: "characteristics" at biology news

Hopkins And International Team Maps First Major Cancer Gene To X Chromosome

... says Isaacs, "no homogeneous group with suchclear characteristics has popped up." In studying nearly 1,000 people withearlier-than-usual onset of the disease and a strong family history of prostatecancer, the researchers found a specific area on the X chromosome that wasshared more frequently than one would predic...

Smoke breathes new life into a forest

...seeds. Keeley and Fotheringham compared seed characteristics of species stimulated by smoke to those stimulated by heat shock, and the different mechanisms behind germination. Seeds that germinate after exposure to smoke are distinctly different from those that do not: outer seed coats are highly textured...

First Derivation Of Human Embryonic Stem Cells Reported In Science

... from hES cells might be engineered to develop the characteristics of Alzheimers disease and used to discover effective drug treatments. Human embryonic stem cells should also further our understanding of embryonic development with potential applications toward the treatment of infertility and premature pregnancy lo...

Test For Genetic Trait May Indicate Heart Benefits Of Hormone Replacement Therapy

... B are subject to a sort of "bad metabolicstew" of characteristics that put them at higher risk for heart disease. Thefirst being that their smaller LDLs lodge into the artery wall 40 percent fasterand contain about half the amount of protective antioxidants as the larger LDLs-- this makes pattern B LDLs more susce...

Ancient Antarctic Environment Rocked By Volcanic Eruptions

...ns from anearby source, but the exact location and characteristics of that source arestill unknown. The thickest distinct layer of volcanic debris is 1.2 meters thick,which suggests an eruption as dramatic as that of Krakatau in 1883. Theselayers contain volcanic pumice up to 1 cm in size, which suggests th...

Discovery Of New Fossils In Gobi Desert Of Mongolia Provides Important Insight Into Early Mammal Evolution

...llow scientists to define for the first time which characteristics are unique to the marsupial lineage, and allow them to draw a comprehensive family tree for both this group and our own progenitors, the placental mammals. Marsupials, the group of mammals that includes opossums, kangaroos, and koalas, represent one...

Disease Mechanism In Hereditary Dementia Discovered: Treatment Implications Seen For Alzheimer's And Other Neurodegenerative Diseases

...sity of Pennsylvania MedicalCenter reveals pivotal characteristics of the disease mechanism underlying ahereditary dementia similar to and often confused clinically with Alzheimer'sdisease. With a clearer view of the pathology involved, the development of drugtherapies to counter the problem becomes possible. Indeed...

Exotic Species, Migratory Birds, Sea Level Rise, Wetlands, And Contaminants...USGS Scientists Discuss Innovative Chesapeake Bay Restoration Studies

...study the sora rail stopover ecology and migration characteristics are large-scale bandings and radio telemetry. The .... The IBI will use community structure and species characteristics to assess the effects of human factors such as methods of wetland creation and surrounding land use ...

First Complete Fossil Of Fierce Prehistoric Predator Found In South Africa

...rocious predator with both reptilian and mammalian characteristics that becameextinct 250 million years ago. A five-person team was searching on a mile-high plateau in South Africa's Karooregion when the discovery was made Nov. 17. Roger Smith, the museum's curator ofgeology, found a small bone fragment jutting from...

Science-Based Decision Guide May Be Answer To EPA's Controversial Rule

...he EPAto base its regulations on the toxicological characteristics of plants, ratherthan the techniques used to develop them. "The EPA's proposed rule sends a signal to the world that the UnitedStates views its own genetically modified plants as hazardous to people or theenvironment," said R. James Cook, P...

Immortalizing Enzyme Does Not Make Human Cells Cancerous

...nd vigorous. The cells exhibited none of the characteristics associated with cancercells, such as chromosome instability, serum-independent growth, loss of contactinhibition and loss of cell-cycle checkpoint controls. In an accompanyingarticle, collaborators at the Geron Corporation and academic colleaguesdemo...

Marine Fish Culture By John W. Tucker, Jr., Ph.D.

...tics, health and handling, detailedreviews of fish characteristics relative to rearing, the rearing environment,reproduction, nutrition of larvae and nutrition of juveniles and adults. Thisbook also includes reviews of current rearing knowledge for bait food andornamental marine fish, by family....

Swimming Proficiency Of Marine Mammals Ranks Them Among The World's Elite Animal Athletes

...chaicpinnipeds (seals and sea lions) with skeletal characteristics suggesting asemiaquatic lifestyle. The ancient oceans must have offered significant advantages to thesetransitional mammals, because the energetic costs associated with the move fromland to water would have been high, according to Williams. Other re...

Researchers Find Genetic Connection To Cigarette Smoking

...6A3-9 gene was associated with certain personality characteristics thatinfluenced a person's susceptibility of being able to start and stopsmoking. A person with the SLC6A3-9 genotype was found to have lower noveltyseeking traits than a person without this genotype, according to the study.And because novelty s...

NSF's Highest Honor For New Faculty Fosters Integration Of Research And Education

...alysis,and experimental investigation of nonlinear characteristics of smart materials,such as piezo-ceramic composites, and investigates their application invibro-acoustic energy conduction, transduction, dissipation and excitation. Theeducation plan includes outreach activities involving inner-city youth throughth...

Vanderbilt University Medical Center Forms Institute For Coffee Studies

...he work, the researchers will examine the chemical characteristics ofcoffee, evaluate their effects on the body's neurotransmitter systems,synthesize the agents that are not yet available for study and study theseagents in cell cultures and animal addiction models. "We would like to see whether chlorogenic acids or ...

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

... in Göttingen/Germany, studied thebiochemical characteristics and cellular localization of Neuroligin 1, a memberof a brain-specific family of cell adhesion proteins. In collaboration withKonstantin Ichtchenko and Thomas C. Südhof from the University of TexasSouthwestern Medical Center in Dallas/Texas, the...

UF Scientist Seeks Super Sea Oats

...oats, Kane is searching forvarieties with specific characteristics that are commercially andecologically valuable, su... each site and determine whether they havevaluable characteristics that would allow us to better protect andstabilize the coastline. One of our ultimate goals is to be...

Gene Study Shows Turtles Are Next Of Kin To Crocodiles And Alligators

...od to see if they can findany patterns of physical characteristics that would logically reposition theturtle on the family tree in a way consistent with the results of our largestudy of its genes."...

New Edition Of Ecological Monographs Is Now Available

...; smaller groups of trees may not contain the same characteristics and may bemore vulnerable to floods. Exotic Plant Species Invade Hot Spots of Native Plant Diversity Researchers in Colorado have conducted long term studies on the patterns ofexotic plant invasions that have recently challenged some of ecology'...

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