Tag: "black" at biology news

Fragmentation may limit songbird sex lives

... male hooded warblers, small yellow songbirds with black caps and throats. To see if fragmentation restricts their movements, the researchers radiotracked 20 of the warblers in forest fragments separated by agricultural fields in northwestern Pennsylvania. Ranging from 1.7 to 6 acres, these isolated fragme...

Discovery: Scientists find new reason red blood cells cut blood flow in sickle cell disease victims

...s in the United States. About 150 in every 100,000 black children and young adults suffer from it, according to the American Medical Association. A report on the experiments, funded by the National Institutes of Health, appears in the June 15 issue of the Journal of Clinical Investigation. Besides ...

UF scientists say global warming could spread mosquito

... Asian tiger mosquito is named for its appearance, black with silver-white bands. Though small, the species is an aggressive biter, attacking humans, livestock and wildlife, mainly during daylight hours. Phil Lounibos, a UF entomology professor who studies the Asian tiger mosquito, said it draws interest f...

Plants vs. disease: 'Trench warfare at the molecular level'

...professor of plant pathology. The disease produces black lesions, often with a discrete yellow halo that can appear on the plant leaves and cause them to curl. Growers had been instructed to spray a copper-based pesticide to ward off bacterial speck. But, over the years, the disease became resistant to t...

Weight more closely linked to early puberty in preteen white girls than black girls

...average puberty in white girls but much less so in black girls, the first large study of the subject shows....een obesity and onset of puberty also exists among black girls, the connection is weak, researchers say, but they dont know why. Something else must be happe...

A closer look at the genomes black holes

...considered by some to be the genomic equivalent of black holes -- may hold the answers to many scientific q...hat of any other complex organism. They remain big black holes often millions of bases in length in every chromosome." The wide variability of centromeric DN...

UC Davis' first cloned calf born, succumbs three days later

...ereford cow. The calf was carried by a white-faced black surrogate mother, which is a cross between a Hereford and an Angus, both beef breeds. "I'm awed that we could produce a live calf from an adult skin cell, yet humbled by the knowledge that there were things wrong with her that the best and most advan...

Rutgers researchers find black tea 'bullet' that targets colorectal cancer

...eam of Rutgers researchers has found a compound in black tea that may be one of the "magic bullets" that do...cal properties. The researchers found that when a black tea polyphenol known as theaflavin-3'-monogallate (TF-2) was added to a pair of laboratory cultures ...

Dentists abuzz over cavity-prevention potential of honeybee product

...ings around his ankles from angry bees because his black socks triggered the bees defensive behavior. Brushing the pain aside, Koo persisted, focusing on the cavity-fighting potential of propolis as he earned his masters degree in food science and his doctorate in oral biology in Brazil. Then he came to t...

American Chemical Society meeting features cutting-edge research August 26-30 in Chicago

...nesday, August 29, 1:30 p.m.) Study involving black men provides evidence that tomato sauce fights prostate cancer A new study involving African-American men who as a group have the highest incidence of prostate cancer in the world provides further evidence that lycopene, a chemical found in abund...

Changes in Lake Erie fish population suggest lake's recovery

... conditions: Tolerant species included black crappie, channel catfish and common carp; intolerant species included smallmouth bass, lake whitefish and minnows. The researchers used the abundance of signal species throughout ...

Phased-out Bt corn variety dramatically cut growth rate of black swallowtail caterpillars

... event 176 dramatically reduced growth rates among black swallowtail caterpillars in University of Illinois...d with the 176 event may have sublethal effects on black swallowtails (Papilio polyxenes) feeding on host plants situated outside of cornfields, the authors ...

Research: U.S. boys also reaching puberty earlier than in past years

...study indicating that U.S. girls of both white and black race appeared to enter puberty earlier than they did in years past. For unknown reasons, black girls on average start maturing about a year before whites do, that study showed. The new research f...

APS August/September journal hot picks

...rcise studies on elite athletes, differences among black and white females exercisers, and effective techni...ene and his colleagues studied 741 adult white and black subjects and their response to 20 weeks of endurance training. The researchers compared changes betw...

Black raspberries show multiple defenses in thwarting cancer

COLUMBUS, Ohio - A cup of black raspberries a day may help kee... Researchers found evidence in rats that black raspberries may both prevent the onset of esophageal cancer as well as inhibit ...

Chemical pollution and human sewage could be killing corals

...sponsible for the development and spread of deadly black band disease in corals, researchers at the Univers...pulations. To identify the microbes inhabiting the black band biomat, the researchers extracted the microbes DNA, amplified and sequenced it. They found sev...

Enzyme studies at Brookhaven Lab may lead to new antiviral agents

... and Yersinia pestis, the organism that causes the black plague," said Walter Mangel, the lead scientist on the studies. During infection, these viruses make an enzyme called a protease, which cleaves or degrades other proteins. The protease is used by the virus to complete the maturation of newly synthesi...

Magnetic tag lets scientists track stem cells in living rat

...and oxygen. The iron-laden cells create a magnetic black hole easily spotted by magnetic resonance imaging,...aging scanner loses the signal, and the area looks black on the image." Other researchers have used dendrimers containing gadolinium, which is also useful as...

Access to healthy foods limited in poor neighborhoods

...markets in predominantly white neighborhoods as in black neighborhoods. Black households are less likely to...n and supermarkets in low-wealth and predominantly black neighborhoods suggests that residents of these neighborhoods may be at a disadvantage when attemptin...

Researchers call herbs rich source of healthy antioxidants; oregano ranks highest

...ices, including paprika, garlic, curry, chili, and black pepper. Herbs came out on top, she says. Herbs can be consumed in a variety of ways. Some people prefer to drink herb extracts, which can be made by adding herbs to hot water to make potent antioxidant teas. Others use concentrated herbal oils availa...

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