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Tag: "tracing" at biology news

Glow-in-the-dark zebrafish at UH hold keys to biological clocks

.... "Ultimately, this type of research can help with tracing why humans develop such things as sleep disorders or mental illnesses like depression." Per3 is the naturally occurring clock-regulated gene. The protein that it encodes is produced at highest levels near dawn, and when the luc gene is inserted into...

Marburg haemorrhagic fever in Angola update

...nature. Rapid detection and isolation of patients, tracing and management of their close contacts, infection control in hospitals and protective clothing for staff work to interrupt chains of transmission and thus seal off opportunities for further spread. Such straightforward measures are complicated by th...

Survey finds silver contamination in North Pacific waters

...United States, and this may be a valuable tool for tracing those emissions, both in the atmosphere and in the water," she said. Prevailing westerly winds carry atmospheric pollution across the North Pacific ocean from China, where coal is the primary fuel and the use of emissions controls is limited. Major ...

The biggest family tree ever

...articipating in the world's most ambitious project tracing the genetic and migratory history of the human rac...re with Family Tree DNA, a company specializing in tracing ancestry using genetics. The company has been contracted to process the samples in the Genographic P...

WHO suspends Marburg work, appeals for new funds

...the early detection and isolation of cases and the tracing and follow up of contacts. ...

Researchers develop promising new gene network analysis method

...tant because it describes a promising new tool for tracing human gene connections, a task critical for understanding and treating cancer and other diseases. Results appeared this week in the online edition of the Proceedings of the National Academy of Sciences. "Genes influence one another in many intricate...

Understanding biases in epidemic models important when making public health predictions

...uate levels of disease management, such as contact tracing and quarantining of those exposed. However, Wearing was careful to stress that current health protection programs have shown their effectiveness in such situations as the recent SARS outbreak in Southeast Asia. "We are highlighting what 'may happen'...

Inhaling large amounts of salt can cause hypertension

...uate levels of disease management, such as contact tracing and quarantining of those exposed. However, Wearing was careful to stress that current health protection programs have shown their effectiveness in such situations as the recent SARS outbreak in Southeast Asia. "We are highlighting what 'may happen'...

Field of beams - Novel system uses polarized light pulses to reveal crop health

...uate levels of disease management, such as contact tracing and quarantining of those exposed. However, Wearing was careful to stress that current health protection programs have shown their effectiveness in such situations as the recent SARS outbreak in Southeast Asia. "We are highlighting what 'may happen'...

Analysis of flower genes reveals the fate of an ancient gene duplication

...haped the evolution of today's living species, but tracing the evolution of a specific single gene over millions of years of evolution--and over potentially several gene-duplication events--can pose a significant challenge. One way in which this can be overcome is for researchers studying a particular modern...

'Underground' tunnels discovered as means for communication between immune system cells

...may be conceivable to follow the entire pathway by tracing the network of tunneling nanotubules," said Dr. Salter. The authors' discovery builds on their recent research showing how dendritic cells respond to stimuli, but, as they freely admit in this paper, it was due in large part to an accidental observa...

Olfactory system detects pheromones that control reproduction

...omonal cues on LHRH release. But because classical tracing techniques could not specifically identify the connection of neuronal subsets, they ended up tracing the routes of groups of undefined neuronal populations clustered around LHRH producing neurons, Dula...

The brain is broadly wired for reproduction

... The scientists began their studies by focusing on tracing the neural pathways leading to and from neurons th...lving GnRH neurons, the researchers used a genetic tracing method that they previously developed for charting neural pathways. They first engineered mice in wh...

UCSD biologists find new evidence for one-way evolution

By tracing the 30-million year history of variation in a gene found in plants such as tomatoes and tobacco, biologists at the University of California, San Diego have found new evidence to support an old idea -- that some evolutionary changes are irreversible....

Utah researchers confirm chromosome may harbor autism gene

...rs at the U School of Medicine made the finding by tracing variations in the DNA of an extended Utah family that has a high occurrence of the disorder and whose members are descended from one couple. As part of the study, the researchers also ruled out one gene that appeared to be a good candidate for being...

How sperm crack the whip

...he many controlling currents inside sperm and also tracing how calcium triggers hyperactivation once it enters the cell. Such studies will enable exploration of sperm machinery from tail to head ?analyzing processes ranging from tail motility to the mechanism by which the sperm head delivers its genetic payl...

Dissecting the machinery of nicotine's reward

...ly addictive drug. And that understanding involves tracing the neural machinery by which nicotine switches on the brain's reward machinery. In an article in the June 15, 2006, Neuron, Jean-Pierre Changeux of CNRS, Coll├Ęge de France, and Institut Pasteur and Philippe Faure of Institut Pasteur and CNRS and co...

Large-scale genomics project will hunt genes behind common childhood diseases

...interact with environmental factors. "We will be tracing the major underlying genetic component of disease-related genes while discovering the biological pathways involved in disease development," Dr. Hakonarson added. "For instance, a specific cholesterol receptor may be dysregulated because of genetics, ...

Viral marker of human migration suspect

A benign virus previously used as a marker in tracing human migration may be unreliable, according to researchers at Penn State. Results of this study also suggest that some viruses might be undergoing much higher rates of evolution than previously thought. "The most genetically divergent human populat...

Nerve cell software keeps track of brain change

..., patented by Australia's CSIRO, for automatically tracing and measuring lines in complex images. With up ...ne hundred times faster than a person using manual tracing methods can," Dr Vallotton says. "This improvement will speed the progress of brain research ?rese...

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