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Tag: "fingerprint" at biology news

'Terror bird' arrived in North America before land bridge, study finds

...worked from its place of formation, it will have a fingerprint that is different from the others nearby," Grandstaff said. "Who knew that all these fossils essentially have a tag that says 'hey, I'm from over here!' " ...

A sweet step toward new cancer therapies

... masses of the various fragments provide a sort of fingerprint that reveals the genetic blueprint from which the protein was built---information that helps researchers confirm the protein's identity. This works fine as long as the protein has not been modified after it was produced. But if other chemical groups ...

Newly identified biomarker detects and regulates spread of brain tumors

...omarkers, singly or in combination, will provide a fingerprint of the disease and be able in the future to better define the disease, predict what kind of treatment to use and allow doctors to monitor how well the tumor responds to treatment. "Using proteomic analyses of the CSF of patients with brain tumors...

Sports cheats beware -- new test detects previously undetectable drug

... analysis. This lets scientists produce a chemical fingerprint of the molecule ?a fingerprint that uniquely identifies it. "If the drug testing authorities adopt this new test it will close a...

International team analyzes human genetic variation in key immune region

...called "HLA genes." These genes form a distinctive fingerprint that is recognized by an individual's immune system to distinguish foreign tissues from "self" tissues and the genes' DNA sequences are frequently analyzed (a process called "HLA typing") in patients who receive organ transplants or suffer from autoi...

Potato blight pathogenicity explained by genome plasticity

...search that they have identified a unique genetic fingerprint in the pathogen responsible for potato blight. Some strains of the pathogen possess multiple copies of a specific gene, while other strains possess only a single copy. Certain potato plants do not recognize strains of the pathogen with only the sin...

Study finds that a woman's chances of having twins can be modified by diet

...tic sets. Dr. Steinman also found evidence through fingerprint analysis that as the number of fetuses in a monozygotic set increases, so does the level of physical diversity among them. In his most recent study of the mechanisms of twinning prior to the new study, Dr. Steinman confirmed that use of in vitro fert...

Atmospheric ozone recovering in mid-latitudes, report shows

...Our study provides a quantitative measure of a key fingerprint that is lacking in earlier studies -- the response of the ozone layer as function of height. We reconcile the height-dependent response with observations from other instruments that record variations in total-column ozone". To accurately attribute t...

NASA study solves ocean plant mystery

...ve sufficient iron. It is this signal they used to fingerprint what parts of the ocean are iron-stressed and what parts are nitrogen-stressed. It is important that scientists understand how ocean plants behave because all plants play a critical role in maintaining a healthy planet. Plants annually take up bill...

UCSD team unmasks family of immune system invaders

...tify the family of hijackers. Using this molecular fingerprint and computer-aided searches, they discovered a number of proteins having the same molecular pattern ?all were proteins used by pathogenic microorganisms. UCSD researchers were able to determine that additional bacterial proteins used a common strate...

Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace

...tuations of neural activity. "The trace is like a fingerprint that disappears over time. It's strongest after the honeybee's initial exposure to an odor, but you can still detect its signature features minutes afterwards," said Galán. A future question that could be addressed using this research is addressing...

Sleeping beauty plays a significant role in identifying cancer genes

...turned them on or off -- in effect, uncovering the fingerprint of each tumor's cancer genes. David Largaespada, Ph.D., associate professor and leader of the Genetic Mechanisms of Cancer Program, led the University of Minnesota Cancer Center research team. Their work focused on cancer gene discovery in solid tum...

Researchers seek to discover what really happens when a virus enters the body

...ve method that derives a characteristic profile or fingerprint from the IIS of any host-virus system. If their method can achieve results in hours instead of days, their techniques could be used in clinical and field settings to quickly identify known viruses, or to map unknown viruses to existing profiles to be...

Gov't Creates Gene Database of Normal Human Tissues

...commonly known as gene chips, to provide a kind of fingerprint that researchers and clinicians can use to compare cells and tissue they suspect may have cancerous or other malfunctioning genes. To create these fingerprints, Khan and his team assembled a complementary DNA (cDNA) microarray, using a pair of glass ...

Microarrays as phenotype

... nucleic acid is present. Genotype is the genetic fingerprint of a particular cell. Phenotype is the outward manifestation of the genotype. For example, a person may have genes for eye color. That is that individual's genotype. Blue eyes is the phenotype. The microarray data Shaulsky and his collaborators used...

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