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Tag: "location" at biology news

Protein synthesis can be controlled by light, opening way for new scientific, medical applications

...f biological function is dependent on the specific location of a particular event. While the new caged compound and its photoreactive properties may never be used for anything as complex as drug delivery, it may well serve a purpose in studying such areas as memory, brain function and even Alzheimer's Diseas...

How exactly does the brain control breathing?

...ly debated by Guyenet and Richerson is the precise location and cell types involved. Guyenet proposes that these nerve cells are located in a ventral area of the brainstem (the retrofacial region) and loaded with a transmitter substance called glutamate. Their close proximity to the ventral surface of the bra...

High-powered gene profiles provide clues to genes involved in common form of lung cancer

...g cancer. The findings provide new clues about the location of genes potentially involved in the most common type of lung cancer –?and one of the deadliest of all malignancies –?and a range of possible targets for future therapies. The study will be reported in the Proceedings of the National Academy of Scie...

UCLA cancer researchers shake loose hidden biomarker

...ssed in prostate cancer, shaking it loose from one location in a cell ?where it could not be accessed by blood...the prostate-specific membrane antigen (PSMA) in a location on the cell that would allow blood-borne immunotherapies to access the biomarker, transforming it fr...

Mice brains shrink during winter, impairing some learning and memory

...e platform was. Moreover, they didn't remember its location as well from one day to the next. However, other tests showed that nonspatial learning and memory, including sensory abilities, were not affected by short days. "It appears that only specific kinds of brain function are impaired during winter," Nel...

Research Reveals Functions Of Harmful Shellfish Pathogens

...persistent in--oysters. The Dover center, a field location of the ARS Eastern Regional Research Center in Wyndmoor, Pa., also studies methods to detect norovirus and the hepatitis A virus in shellfish. It also develops high-pressure processing techniques to inactivate enteric viruses in contaminated shellfis...

Pair of cancer genes found to drive both cell migration and division

...nes in dividing cells by seeing if controlling the location of the PTEN and PI3K proteins can determine the direction in which cells divide, Devreotes says. ...

Scientists analyze chromosomes 2 and 4

...etch of DNA sequence that likely marks the precise location of the inactived centromere. That tract is characterized by a type of DNA duplication, known as alpha satellite repeats, that is a hallmark of centromeres. In addition, the tract is flanked by an unusual abundance of another type of DNA duplication, ...

What the eye doesn't see

... printed on them. By varying the colours, size and location of patterns on the moths the team were able to mimic real tree characteristics and identify which pattern combinations were the most successful. Professor Innes Cuthill said: "The rate at which mealworms were eaten by birds gives a measure of how ef...

Stealth Worms May Improve Insect Pest Control

...n and veterinary importance," Stock says. In each location the scientists start with biotic surveys to find out which nematodes and their corresponding bacteria meet local pest management goals. Then they gather samples from soil or other habitats for testing in the laboratory. The nematodes are accurately i...

Brain May Be Less Plastic Than Hoped

...ch section of the retina corresponds to a specific location in the primary visual cortex. Without any visual signal to interpret, the cortical area corresponding to each monkey's blind spot fell silent, generating no activity. The team measured the size and shape of each of these cortical quiet spots. They p...

Rhesus monkeys can assess the visual perspective of others when competing for food

...us monkeys were unable to find food under a hidden location when the human experimenter who hid the food preferentially looked at the hidden location. These results suggest that competition-like situations may bring out the primates' abilities more than experiments that don't involve competition. These lates...

Chromosome Deletion Predicts Aggressive Neuroblastoma

...auses the deletion of genes on chromosome 11, at a location designated chromosome 11q23. However, the loss of material at that site apparently removes the protective effect of a tumor suppressor gene, and thereby allows the tumor to grow. Patients in the study with the chromosome deletion had a three-year ove...

Grasping metaphors: UC San Diego research ties brain area to figures of speech

...r primates, the angular gyrus, given its strategic location at the crossroads of areas specialized for processing touch, hearing and vision, Ramachandran conjectures, is critical both to conceptual metaphors and to cross-modal abstractions more generally. "While it would be premature to conclude that the ang...

Revolutionary nanotechnology illuminates brain cells at work

...ZIP codes can be used to target the sensors to any location in the cell and to its surface. "We used a protein called ybeJ from the common bacterium E. coli. We first predicted the structure of this protein, and then placed the two fluorophores at specific positions on the binding protein," commented co-auth...

Nanoparticles offer new hope for detection and treatment

...oops" on the new vessels' cells, they revealed the location of the tumors. Nanoparticles are particularly useful because of their adaptability, according to Lanza, who sees patients at Barnes Jewish Hospital. "We can also make these particles so that they can be seen with nuclear imaging, CT scanning and ult...

Advances in the characterisation of the oyster mushroom genes

...racterisation of their structure. Regarding their location on the linkage map, it has been found that four of the five genes are located on the same chromosome, quite near each other, and the other is located on a different chromosome. It is precisely this fifth gene that is structurally distinct from the ot...

PET/MRI scans may help unravel mechanisms of prenatal drug damage

...PET scanner, which takes snapshots of the tracer's location over time to show how much and how quickly the cocaine (and/or the metabolic byproducts that retain the carbon-11) enters and clears the various organs. The radiotracer decays and completely clears from the animal's body in about two hours. After the...

Unexpressed But Indispensable -- The DNA Sequences That Control Development

... research. For example, analyzing the sequence and location of these CNEs may help point the way to other non-coding elements that remain undiscovered. It is also likely that mutations in these critical sequences cause human diseases. Studying how such mutations drive development astray may lead to better und...

UCLA scientists transform HIV into cancer-seeking missile

...her we can direct therapeutic genes to the precise location where cancer cells reside," Chen said. "This appro...lance at tumor sites, identify cancer cells' exact location and kill them before they cause damage," he added. "Beyond cancer, it may be possible to correct acq...

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