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Tag: "established" at biology news

Snoring in children might be an allergic type disease

...ational medical journal, Pediatric Pulmonology has established children with rhinitis who were first born, were exposed to maternal tobacco smoke during the first year of life and/or who had asthma and/or eczema at age five years were more likely to snore. Breastfeeding, birth weight, body mass index at age 4...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...viding that number by the rate of change, which is established with the help of fossils and geologic information," explained Hedges. The study's DNA research revealed that, while many ocean dispersals may have occurred over time, only two led to the current faunas: one for the Caribbean islands and another fo...

Australian wins prestigious prize in biodiversity informatics

...he Global Biodiversity Information Facility (GBIF) established the Prize in honor of Dr. Ebbe Schmidt Nielsen, who was an inspirational leader in the fields of biosystematics and biodiversity informatics. This is the only Prize in the world that is given in the area of biodiversity informatics. The yearly awar...

The kapok connection -- Study explains rainforest similarities

...ive an oceanic voyage and then successfully become established elsewhere, such improbable events become probable over 10 to 15 million years." Dick studied the rainforest form of Ceiba pentandra, a species of kapok that grows taller than a 16-story building, its head poking above the forest canopy. Its flo...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...ial College scientists participating in this study established previously that other mosquitoes do have a robust immune system that can either allow or block transmission of malaria parasites. Further research will be needed to ascertain whether some of the newly discovered genes in Aedes may provide a similar d...

New vaccine prevents CMV infection and disease in mice

...he disease, but prevented the infection from being established in the first place,” Morello said. Researchers at UCSD hope to begin pre-clinical work on development of a human vaccine. If successful, an FDA-approved, commercially licensed hCMV vaccine could be administered to specific at-risk populations, s...

First confirmed common genetic risk factors for breast cancer

...n as the Breast Cancer Association Consortium, was established in 2005 to provide large sample sizes for examining genetic associations. In addition to GIS, participants include the Karolinska Institute with which the GIS has several other collaborations, and scientific institutions in other countries of Europe,...

Philandering female felines forgo fidelity

...utside the study area. The findings corroborate established studies on ranging patterns of female and male cheetahs. Female cheetahs occupy a home range averaging some 833 square kilometers in size, whereas a male’s territory averages 37 square kilometers. In many carnivore species, it’s the males that have l...

How the brain's backup system compensates for stroke

...ase in activity. The researchers' experiments also established that this activity increase was functionally speci...ncrease in brain activity. The researchers also established that the activity increase in the right PMd caused the recovery of performance. When they also used ...

Master regulatory gene of epithelial stem cells identified

...een with the mice lacking the p63 gene." Having established that p63 was only important to the maintenance of stem cells, McKeon and his research team then used the epithelial stem cell cloning methods developed by Howard Green, MD, the George Higginson professor of cell biology at HMS, to show that p63’s key...

Newborn neurons like to hang with the 'in' crowd

...n cells that are already well connected within the established circuitry, report scientists at the Salk Institute for Biological Studies in the online edition of Nature Neuroscience. At first, they gingerly sniff out pre-existing connections between brain cells but as the new neurons mature over time they get...

DNA-damage test could aid drug development

...hang in the Lodish lab to adapt techniques from an established cell-culture system based on mouse fetal liver cells to create a new system based on adult red cell precursors from mouse bone marrow. Shuga patiently optimized the system, which allows the precursor cells to proliferate and differentiate in the norm...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

...ecided that an even better way would be to turn to established fly strains isolated decades ago that possess disruptions in their genes controlling circadian rhythm. In this case, these mutant flies could be kept under exactly the same light and temperature conditions as the normal flies. They looked at flies...

Researchers develop way to calculate speed of bacterial sex

...surfaces by bacterial cells. Using a previously established conceptual framework of conjugation processes in an isolated environment, researchers created a new mathematical model of bacterial transport and conjugation that focused on subsurface bacteria colonizing surfaces, such as sand and soil grains. The U...

Herpes infection may be symbiotic, help beat back some bacteria

...nefits of eliminating a virus that our bodies have established a symbiotic relationship with." Scientists previously used vaccination to eliminate the deadly and highly contagious smallpox virus. Vaccines are currently in use or in clinical trials for several disease-causing strains of herpes. Human herpes...

A new portable biosensor detects traces of contaminants in food more quickly and cheaply

...d water. For this reason food safety agencies have established control measures to prevent these pesticides enter... be harmful for people. The European Community has established upper limits for the presence of traces of pesticides and antibiotics in food, but the control of th...

Left-right wiring determined by neural communication in the embryonic worm

...nfigurations of two types of olfactory neurons are established during development. In a study released in the May 18 issue of Cell, the researchers show that embryonic worms have a system of gap junctions -- "broadband" communication channels through which cells pass many kinds of molecules and electrical signal...

Study of protein folds offers insight into metabolic evolution

...ional Academy of Sciences. Their work relies on established techniques of phylogenetic analysis developed in the past decade to plot the evolution of genes and organisms but which have never before been used to work out the evolutionary history of protein architecture across biological networks. "We are in...

Leukemia drug turns mini-molecules up, cancer genes down

...NA were associated with low Ras activity. They established a cause and effect relationship as before, by adding additional let-7 to untreated leukemia cells. "Overall," Garzon says, "our findings show that ATRA induces the expression of these three miRNAs, and through them regulates genes that need to be...

Tibetan antelope slowly recovering, WCS says

...erted efforts to safeguard their wildlife and have established local wildlife preserves to protect populations of wild yak and other wildlife. "These wholly local Tibetan initiatives are the best means of establishing long-lasting conservation efforts, and they should be encouraged in every possible way," sai...

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