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Tag: "responsible" at biology news

New research shows why too much memory may be a bad thing

...nesis, in the hippocampus, the region of the brain responsible for learning and memory. Results of the study, conducted with mice, found that the absence of neurogenesis in the hippocampus improves working memory, a specific form of short-term memory that relates to the ability to store task-specific informat...

Music genes and musical geniuses

...he meeting are various: from the research of genes responsible for our becoming great pianists (or, on the contrary, being completely tone-deaf), to the evolution of music in the history of mankind through the comparison with other animal species; from the role played by music in children's education, to the stu...

Molecular motors and brakes work together in cells

...ne have discovered that microtubules -- components responsible for shape, movement, and replication within cells -- use proteins that act as molecular motors and brakes to organize into their correct structure. If microtubules are not formed properly such basic functions as cell division and transport can go wro...

New fMRI technology making brain tumor surgery safer

...umors while preserving areas of the brain that are responsible for speech and movement. The Cincinnati specialis...blood oxygen levels in parts of the brain that are responsible for movement, perception, and cognition. Functional MRI, which reveals the brain in action, differs ...

U of MN researchers turn cord blood into lung cells

...ll called type II alveolar cells. These cells are responsible for secreting surfactant, a substance which allows...to move in and out of the sacs. The cells are also responsible for helping to repair the airway after injury. "In the future, we may be able to examine cord blo...

St. Jude announces breakthrough in eye cancer treatment

... the immature retina, which is the part of the eye responsible for detecting light and color. The cancer is fatal if left untreated. The new treatment holds promise for a simpler, more effective and less-toxic treatment for retinoblastoma that would eliminate the need for the current, complex therapy, accordi...

Microbes compete with animals for food by making it stink

...her chemicals produced by the microbes were indeed responsible for these feeding and attraction behaviors. They found that chemical extracts composed of numerous compounds suppressed stone crab feeding when added to otherwise palatable fish flesh. But, of the several specific compounds they isolated and ident...

Antibiotic inhibits cancer gene activity

...pal investigator on the study. The FoxM1 gene is responsible for turning on genes needed for cell proliferation and turning off genes that block proliferation. Uncontrolled proliferation is characteristic of cancer cells. The researchers developed a new screening system, based on a naturally fluorescent prot...

Early-stage immune system control of HIV may depend on inherited factors

...ties of HLA, only a few HIV protein fragments were responsible for the activation of CD8 T cells early in infection. In addition, the same HLA types that had been previously identified in people who stay healthy for a longer period of time after initial infection were associated with a more powerful early-stag...

Neuron cell stickiness may hold key to evolution of the human brain

... is what are the DNA sequences in the human genome responsible for the capabilities that distinguish us from the rest of the animal kingdom," said Rubin. "We have long suspected that it would be a combination of DNA sequences coding for genes and DNA sequences that control when genes are switched on or off. In...

Novel experiment documents evolution of genome in near-real time

...f E. coli. To confirm that the mutants were indeed responsible for the faster growth, the researchers substituted the two mutant genes into the original strain and duplicated the faster growth rate. "We expected to find many mutated genes and we thought our results would be very difficult to understand, but neit...

With fruit fly sex, researchers find mind-body connection

...different, too. "Doublesex" is the gene largely responsible for these body differences. Doublesex, new research shows, is responsible for behavior differences as well. The finding, made by Brown University biologists, debunks the noti...

Bacteria in small sea life yield new way to make potential cancer drugs

... squirts and other marine life. These bacteria are responsible for making a wealth of chemicals, which accumulate...around the country identified individual mutations responsible for changing from one compound to another. By mimicking this natural process, the researchers synthe...

'Killer' B cells provide new link in the evolution of immunity

...a highly adapted part of the immune system chiefly responsible for, among other things, the creation of antibodies that tag foreign particles and microbes for destruction. "When examining fish B cells we see them actively attacking and eating foreign bodies, which is a behavior that, according to the current d...

Harvard scientists identify compounds that stimulate stem cell growth in the brain

...ovide important clues as to which compounds may be responsible for causing key brain cells, neurons, to regenerate and ultimately restore brain function. The research study focused on two compounds--LTB4 and LXA4. Both play a role in inflammation and are regulators of proliferation of several cell types. When...

New gene linked to bipolar disorder

...order, but progress in identifying the exact genes responsible has been slow because groups of families inherit different susceptibility genes. The Slynar gene is normally found in the brain, but in bipolar disorder has an abnormal effect due to mutations in the gene. However, researchers do not yet know wha...

Einstein researchers demonstrate a novel approach to treating AIDS

...ned immune systems; then a streptococcal bacterium responsible for pneumonia; and now HIV. The researchers zapped the fungi and bacteria directly, but, in the case of HIV, they aimed for the immune cells that the virus infects. In this study their target was the protein gp41, one of several proteins in the HIV...

Genome info from 'plant destroyers' could save trees, beans and chocolate

...phthora sojae, an endemic pathogen of soybeans, is responsible for $1 billion to $2 billion in losses worldwide each year. Phytophthora ramorum is associated with sudden oak death, a disease that has devastated the nursery industry and oak ecosystems in California, Oregon and Washington.More than 1 million nativ...

New clues to how sex evolves

... worms, it was clear that one of the new genes was responsible for successful pairing of the nonsex chromosomes II and III, one was responsible for pairing of chromosome V, and the third for chromosomes I and IV. The researchers were able t...

Sequencing of the oyster mushroom genome

...will be this United States-based body that will be responsible for carrying out the sequencing work and computer analysis. At the Public University of Navarre laboratories the DNA of the oyster mushroom will be isolated and purified and then sent to the Genomics Institute for sequencing. Within one year, app...

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