Tag: "variable" at biology news

$2.7 million grant to support creation of virtual zebrafish atlas

...ail the anatomical abnormalities associated with a variable manipulated in their experiments. The zebrafish, a common home-aquarium fish, has proven to be a good model for a variety of human biological processes and diseases. Zebrafish have a rapidly developing, transparent embryo with females producing abo...

Genes expose secrets of sex on the side

...al mutation as the reason Y-chromosome DNA is less variable than mitochondrial DNA. "Because we don't think the pattern we see was caused by an event that swept across the globe, we had to re-examine our assumptions about whether equal numbers of men and women are mating," Wilder said. ...

JCI table of contents September 15, 2004

...her. Between the number of genes involved and the variable inheritance patterns, identifying all the mutations that could cause disease is a daunting task. Now David Thorburn and colleagues, from Murdoch Childrens Research Institute, have developed a methodology that takes a "Venn Diagram" approach to effic...

Venn diagram tactics to vet complex disease

...her. Between the number of genes involved and the variable inheritance patterns, identifying all the mutations that could cause disease is a daunting task. Now David Thorburn and colleagues, from Murdoch Childrens Research Institute, have developed a methodology that takes a "Venn Diagram" approach to effic...

Story tips from the Department of Energy's Oak Ridge National Laboratory, September 2004

...high-speed aerosol instrument that measures highly variable properties of airborne particles and immediately provides scientists data regarding the composition of the air particulates. The instrument provides more accurate and concise readings than conventional monitors and can be utilized either on the groun...

Computer models expose humans as main cause of caribou decline

...t human activities stood out overwhelmingly as the variable most responsible for the woodland caribou's decline in northern Alberta. The models also showed that woodland caribou could coexist with uncontrolled wolf populations in northern Alberta, but if human developments continue at the current rate, the nu...

Modest climate change could lead to substantially more and larger fires

... and fire histories showed that the most important variable is summer temperature, more important than precipitation in most cases. Using what is considered a low-end climate-change scenario - a 1.6 degree increase in summer temperatures between 2070 and 2100 compared to temperatures from 1970 to 2000 -the a...

Researchers find clues about how antibodies specialize

...Mutations in these gene segments to the so-called variable regions -- give our B cells the ability to make un...cytidine deaminase (AID). But how AID targets the variable region of the immunoglobulin genes -- while leaving the rest of the genetic material in the B cell u...

Got the time?

...els at a single point in time. Many genes exhibit variable expression cycles roughly over the course of a 24-hour day, a phenomenon known as circadian rhythmicity. In their study, Ueda et al. first identified genes that are expressed in high amplitude circadian patterns. Such genes demonstrate cyclical expre...

Alterations in vitamin D receptor gene increase prostate, breast cancer risk

...eorge's Hospital Medical School. Among three known variable regions of the VDR gene considered by the research team, the bb and LL variants increased breast cancer risk by almost twofold. The F variant of the gene had no significant effect on breast cancer risk by itself, however when coupled with the LL geno...

NSF awards $10 million in grants to ocean sites for long-term ecological research

...hward-flowing California Current; a persistent but variable subsurface California Undercurrent centered on the continental slope that carries water poleward from the tropics; and a highly seasonal circulation over and near the continental shelf, which shifts from a windward-driven equatorward flow that brings...

Antimalarial substances found in New Caledonian sponges

...ch of these three groups, in the lateral chains of variable length and degree of unsaturation, This makes for a highly complex chemical family. A combination of chromatographic and spectrometric methods obtained the characterization of 25 different compounds that belong to these three groups, extracted from O...

Heat and exercise alone may not determine how much we sweat

...se bouts such that there was no difference in this variable at the end of exercise. Forearm sweat rate was sig... during exercise, whereas no differences in either variable were observed at the end of exercise between exercise bouts. In contrast to sweat rate, there were n...

Chipmunks descended from ancestors that survived last ice age, scientists say

...a mitochondrial region called the D-loop, a highly variable one that opens a window on geographical time and distribution of organisms. DNA was taken from tissue from the very tip of an ear of each chipmunk after the animals were captured in live traps. The chipmunks were released at the same sites of their ...

$6 million appropriation to focus Sandia research on drinking water desalination, removal of arsenic

...ntrations in drinking water in the area are highly variable but average 15 ppb. The American Waterworks Association Research Foundation (AwwaRF) and WERC - a consortium comprising New Mexico State University, University of New Mexico, New Mexico Tech, and Dine College - will share the arsenic cleanup funding ...

TIGR president discusses significance of finding anthrax toxin

...ructures outside the cell's chromosome) are highly variable among the bacteria strains, suggesting considerable mobility of key toxin genes. Dr. Fraser also will discuss what this means to the nation's effort to catalog potential biothreat agents and to develop better ways to identify them quickly. ...

Genes appear to play a role in development of chronic obstructive pulmonary disease

...ng diseases characterized by limited air flow with variable degrees of enlargement of the lung's air sacs and lung destruction. When diseased, these air sacs, known as alveoli, are unable to completely deflate and are therefore unable to fill with fresh air to ensure adequate oxygen supply to the body. Emphy...

Study of Cape Cod Seashore finds off-road vehicles harmful to beach fauna

..." Steinback noted that the beach ecosystem is very variable because environmental conditions change from day to day. As a result, species composition changes daily as well. "The important thing is that the Park Service is doing a good job of protecting most of the species diversity by limiting where people ...

Gene discovered for Cornelia de Lange syndrome, a disabling genetic disease

...pal investigator of the study. The disease is also variable some patients have much milder forms of CdLS. In addition, because few individuals with CdLS had children, it is rare to find parents and children who both have the disease. In the current study, the researchers analyzed the genomes (the entire genet...

Lewis and Clark data show a different Missouri River

...how that water flow on the river today is far more variable than it was 200 years ago. The data also show tha...ole river is strapped in and the flow is much more variable now than then." According to Ehlmann, the modern Missouri-Mississippi River confluence near...

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(Date:4/17/2014)... at the University of California, San Diego School of ... who have suffered a recent major loss are more ... adults. , The study is published in this month,s ... . , Because compassionate behaviors are associated with better ... offer insights into ways to improve the outcomes of ...
(Date:4/17/2014)... created a new technology for modifying human cells ... body and selectively target cancer and other sites ... monitor and modify human physiology is a promising ... technology enabled bioengineers to build such devices that ... a customized fashion. , "The project addressed a ...
(Date:4/17/2014)... cause of neuronal death in Parkinson,s disease is still ... be mistaken for foreign invaders and killed by the ... diseases like type I diabetes, celiac disease, and multiple ... April 16, 2014, in Nature Communications . , ... Parkinson,s disease; but if true, it could lead to ...
(Date:4/17/2014)... April 17, 2014 EcoHealth Alliance, a nonprofit organization ... published a comprehensive review today examining the current state ... The review calls for improved global surveillance strategies to ... recent outbreak of Ebola in West Africa that has ... of Guinea and Liberia. According to the World ...
(Date:4/17/2014)... April 2014) Population Council scientists and their partners have ... and can prevent the transmission of multiple sexually transmitted ... animals: HIV, herpes simplex virus 2 (HSV-2), and human ... data that the gel is effective against multiple strains ... the vagina against all three viruses of at least ...
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