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Tag: "small" at biology news

A revolution in the monitoring of unborn babies

... baby’s heart for signs of potential danger. It is small and easy to use so that mother’s-to-be can keep a regular check on their baby’s heart beat without having to go into hospital and be attached to a machine. No other technology allows them to do this. It took 15 years of pioneering work and enterpris...

Fish can determine their social rank by observation alone, study finds

...d on a unique experiment with cichlids (SIK-lids), small territorial fish from Africa. "In their natural habitat, male cichlids are constantly trying to ascend socially by beating each other up," said study co-author Russell D. Fernald, professor of biological sciences at Stanford. "It would be really valu...

Blocking immune cell action increases Alzheimer's-associated protein deposits

... molecule. These deposits were primarily found in small blood vessels ?similar to a condition called cerebral amyloid angiopathy, which is associated with an increased risk of cerebral hemorrhage. In addition, CCR2-deficient mice had significantly shortened life spans. By 130 days of age, 85 percent of ...

Reactivated gene shrinks tumors

...aches to turn on p53 in human cancer cells include small molecules that restore mutated p53 proteins to a functional state, as well as gene therapy techniques that introduce a new copy of the p53 gene into tumor cells. One class of potential drugs now under investigation, known as nutlins, acts by interfer...

Plants do not emit methane

...ble to measure the carbon dioxide in the breath of small insects like ants. Even with this state-of-the-art...roversy last year. Conscious of the fact that a small amount of plant material might only result in small amounts of methane, the researchers sampled the ...

Nanoparticles can track cells deep within living organisms

...edicted that you could get enough signal from such small quantities of perfluorocarbons in labeled stem cells to actually see them. I think we've dispelled that notion, and the fluorine imaging approach already is becoming more popular for molecular imaging of various cell and tissue types." Next the re...

Anti-dandruff compound may help fight epilepsy

...lepsy-like seizures in infants. Bathing cells with small amounts of ZnPy caused the mutant potassium channels to let three times as much potassium flow through, raising the possibility of restoring normal nerve cell activity. “Most drug discoveries uncover chemicals that stop things from working - it’s...

Light-based probe 'sees' early cancers in first tests on human tissue

...technique," Wax said. His team plans to begin a small clinical trial of the advanced endoscope in collaboration with researchers at Duke University Medical Center. The team also is conducting animal studies to test the feasibility of incorporating fa/LCI into instruments for examining the colon, lung an...

Fruit fly gene research may shed light on human disease processes

Those small fruit flies buzzing around your bananas are more than pests—they may be allies in a fruitful search for clues to human diseases caused when genes malfunction. "One common misconception is that individual humans may carry 'disease-causing' genes, suc...

A first glimpse of the influenza replication machine

...luenza polymerase that we could work with. It is a small part of the entire protein, but it provides interesting insights into how the protein works and how mutations may affect host range." Together with scientists at the IBS they visualized the atomic structure of the protein and discovered a previous...

Chemicals in brown algae may protect against skin cancer

...ner says, "which corresponds with fewer tumors and small tumors in the treated animals." ...

Smokers quit after damage to brain region

... the 1990s, Antonio Damasio proposed the insula, a small island enclosed by the cerebral cortex, as a "plat...tion or feeling," she said. The finding that one small region could be the Achilles' heel of smoking addiction is especially surprising, given the brain-wi...

Colour sensor breath test can detect lung cancer

...group with respiratory illness were 49 people with small cell lung cancer at various stages of development. The research team used the sensor results from 70% of the study participants to develop a predictive model, the accuracy of which was then tested on the remaining 30%. The results showed that t...

Cryoablation -- A new treatment option for some kidney tumor patients

... noting that it is an option for only a relatively small subset of patients. Percutaneous ablation uses ...e entire tumor. After the cryoprobes are removed, small bandages are placed over the skin puncture sites, and the patient spends one night in the hospital b...

Fruit flies and global warming -- Some like it hot

...iate temperatures. As Volker Loeschcke puts it, "a small amount of heat exposure really toughens flies up against a heat wave, but they don't do quite as well when things are cooler." This means that heat hardening is really important in climates where there are hot days over 37 Celsius in summer, but ther...

Immunization rates hit record high in poor countries

...tannin-rich bark. In winter, chickadees eat the small seed cones of the hemlock and they are only one species of many that depend on the hemlock not just for food but for the architecture of their world. Some warblers only nest in hemlocks and the mountain fish depend on the trees to keep streams cool. ...

Fungal factories may save hemlock forests

...tannin-rich bark. In winter, chickadees eat the small seed cones of the hemlock and they are only one species of many that depend on the hemlock not just for food but for the architecture of their world. Some warblers only nest in hemlocks and the mountain fish depend on the trees to keep streams cool. ...

Groundbreaking Canadian asthma study

...r the mouth, a routine procedure. physicians treat small to medium sized airways with Bronchial Thermoplasty (BT). The BT device generates radio frequency/thermal energy and reduces areas of underlying smooth muscle in the airways. The procedure is completed in three treatment sessions, each lasting less t...

Virtual duck bills demonstrate species coexistence

... to resource partitioning," said Gurd, "ducks with small spacing are more efficient than species with wide spacing because they retain a wider range of particle sizes than species with wide spacing. In order for variation in bill morphology to lead to resource partitioning, each trait must impose both cost...

Unicellular microRNA discovery

...sms, and adds an important piece into the blooming small RNA world. A pressing question we have now is what these miRNAs are exactly doing in the green alga. I hope we will know the answers soon,?says Dr. Qi. MicroRNAs (miRNAs) are a class of conserved, approximately 21-nucleotide long RNAs that regulat...

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