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Tag: "relationships" at biology news

Inflammation and drugs to control this activity studied in a variety of tumors sites

...udy is needed to verify the findings and determine relationships to ibuprofen dose, duration and timing. ...

Study finds 60 new genes controlled by DNA snippet

...l also employed comparative genomics, the study of relationships between the DNA of different species. When a piece of genetic material, gene or regulatory segment, is conserved by evolution from mice to humans it suggests that the segment has a valuable function. Miano's screen required that CArG boxes shared by ...

Enzyme crystal structure reveals 'unexpected' genome repair functions

...address key questions about XPB structure-function relationships for transcription and nucleotide excision repair." Research Associate Li Fan of Scripps Research, the first author of the study, adds, "We were surprised when we found that XPB contains a domain structurally similar to the mismatch recognition domai...

Finding a virus is not all bad news

...uable trail of information about the host animal's relationships to each other. Because of the way the virus is transmitted, closely related cougars will have closely related viruses. It is for that reason we can use the viruses to track the cats and learn about their recent history." Once the viruses have been s...

ASU researchers find link between social behavior, maternal traits in bees

...s feed mostly on nectar. Amdam wondered if similar relationships were present in the highly social worker bees. She noticed that a certain protein--called vitellogenin--associated with a bee's reproductive status was more common in the strain of bees that preferred to forage for pollen (identified by Amdam as the ...

Study reveals classic symbiotic relationship between ants, bacteria

...is system," he says. Currie studies the intricate relationships between certain species of ants in central and South America, the fungus they cultivate for food, the parasite that invades the fungus, and the bacteria that the ants harbor to fight the parasite. The phenomenon is a classic example of mutually bene...

Relationship of brain and skull more than just packaging

...chtsmeier. "We found that the stronger statistical relationships existed between neural structures located near the top of the brain and boney features at the base of the skull." To look at the correlations between the skull and the brain, the researchers first had to find locations that could be accurately found...

The secret life of algae

...ir growth and wellbeing. Research into fundamental relationships and microscopic bacteria may not seem important at first but it is only by improving our understanding at this level that we can discover how to maintain the health of ecosystems at a global level." ...

New analysis shows three human migrations out of Africa

... at Brigham Young University, to determine genetic relationships among and within populations based on an examination of specific haplotypes, clusters of genes that are inherited as a unit. In 2002, Templeton analyzed ten different haplotype trees and performed phylogeographic analyses that reconstructed the his...

Researchers now able to look deep into heart to view triggers of a heart's beat

...n as haplodiploidy, results in interesting genetic relationships that are thought to underlie the complex social behavior of Hymenopteran insects. One of the key steps in the evolution of social insects, therefore, may have been the development of a mechanism for making centrosomes from scratch. "The Hymenoptera ...

Insects that produce males from unfertilized eggs reveal a surprising cellular feat

...n as haplodiploidy, results in interesting genetic relationships that are thought to underlie the complex social behavior of Hymenopteran insects. One of the key steps in the evolution of social insects, therefore, may have been the development of a mechanism for making centrosomes from scratch. "The Hymenoptera ...

Stanford/Packard scientist's data-mining technique strikes genetic gold

...antly in leukemic cells. They also confirmed these relationships by studying genes known to be associated with muscle tissue in both humans and mice. Their classification system was stymied, however, when scientists included too much or too little information in the text annotations, or used imprecise words such ...

Extinctions linked to climate change

...ons until we develop a better understanding of the relationships between global change, pathogens and their hosts." For years, zoologists and biologists have been warning that global amphibian declines, which are believed to be caused by climate change, environmental degradation, pollution and invasive species, a...

Hantavirus found in African wood mouse

...y comparisons are another way to determine genetic relationships among viruses. Isolation of the virus is also required for development of a vaccine. The scientists also are planning to develop and assess a diagnostic test for infection. The work will be done in Guinea, where the group operates an HHMI-supported ...

Absence of critical protein linked to infertility

...he experimental mice were then used to observe the relationships of the hormones and their receptors with the protein under varying conditions during the critical implantation period. In doing so, researchers determined that C/EBPb is a critical mediator of steroid hormone responsiveness in the uterus. "This gene...

Spousal illness can trigger partner death

...look for ways to protect people when their central relationships are disrupted." The study found that certain illnesses in a spouse are more harmful to partners than others. The more a disease interferes with a spouse's physical or mental ability, and the more burdensome it is, the worse for the health of the par...

Engineered mouse mimics cognitive aspects of schizophrenia

...advantage of allowing direct tests of cause-effect relationships for specific aspects of the disease, such as some of the cognitive deficits," they concluded. "We here have been able to introduce genetically a single molecular alteration in a restricted and regulated fashion and to study its behavioral and physiol...

World faces challenge as life expectancies lengthen, scientist says

... different countries around the world and examined relationships between historical trends in aging, population growth and economic activity. His analysis combined these data with forecasts on the future of anti-aging treatments from leading researchers in the field. The result? "We've come up with a scenario: St...

Invasive species harms native hardwoods by killing soil fungus

...at invasive species may disrupt fragile ecological relationships that evolved over millions of years." Stinson and...rhizal fungi (AMF), which form mutually beneficial relationships with many forest trees. These fungi have long filaments that penetrate the roots of plants, forming ...

Bees solve complex colour puzzles

...blem using their experience with meaningful colour relationships between objects in a scene. The findings, publishe...solve, but suggests they do so by using the colour relationships between objects in a scene that were statistically most useful in their past experience. Because thi...

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