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Tag: "young" at biology news

Bumblebee house warming -- it takes a village

...erature in a nest when they incubated the colony's young developing bees or brood. Other workers fanned their wings to cool the nest when the temperature became too hot. Performance of various in-nest tasks is not interchangeable among these social insects. Instead, the researchers found strong evidenc...

Experience affects new neuron survival in adult brain; study sheds light on learning, memory

...emical marker. This comparison indicates that only young neurons are affected by the repeated experience; once new neurons survive the early period of development, their long-term survival and activity become stable. This suggests that the information on the experience is kept for a long time, says Gage. ...

New hereditary breast cancer gene discovered

...er than expected. Moreover, many of the women were young when they were affected by breast cancer," says Gö... patients and now recommend regular mammograms for young women with this syndrome. Several early cases of breast cancer have already been uncovered with mamm...

Study finds mercury prevalent in many western fish

... in moderation is considered safe, though infants, young children, pregnant women and persons who eat a lot of fish have higher risk levels than the general population. Less clear is the impact of that mercury on fish-eating birds and mammals, said Robert Hughes, also an author on the paper and an OSU f...

Circumcision: A proven strategy to prevent HIV

...significantly reduces the risk of acquiring HIV in young African men, according to a study led by University of Illinois at Chicago professor of epidemiology Robert Bailey. The study is published in the Feb. 24 issue of The Lancet. Researchers conducted a clinical trial enrolling 2,784 HIV negative, u...

'The eyes have it' -- Autism research yields surprising results

...al Statistics found the prevalence of children and young people anywhere on the autistic spectrum is 0.9 per cent ?almost one in every 100. ...

Research project tackles 'regeneration' gap

... Initial funding will help provide fellowships for young scientists who will bridge the gaps between the different labs and investigators involved in regeneration research. "The fellows will be the glue that holds this broad group of scientists together," said Steindler, a professor of neuroscience at ...

Researchers show that veins stiffen as we age

...am recruited 24 people for their study--12 healthy young adults between the ages of 18 and 30, and 12 healt...s portion of the research, which will examine both young and older adults with high blood pressure. While high blood pressure is all too common among older...

St. Jude announces breakthrough in eye cancer treatment

...al Nature. Retinoblastoma occurs in about 5,000 young children worldwide each year, arising from the imm...icians, who are reluctant to remove both eyes from young children, said Matthew Wilson, M.D., a surgeon in the St. Jude ophthalmology division and a co-autho...

ASU researchers test antibacterial effects of healing clays

...n clay minerals from other celestial bodies) or as young as I can make them in my lab in a few hours. They form when the chemistry, temperature and pressure conditions are right. In the case of the two French clays we are testing, their chemical structures are almost identical, but the different trace elem...

Cloned mice created from fully differentiated cells, a milestone in cloning research

..., only a handful, at most, of these result in live young when implanted into a female. Many have attributed cloning's limited success to a theory that clones must be derived from adult stem cells, which reside in a specific area of each tissue and remain quiescent until they are activated by the presence ...

Lungs try to repair damaged elastic fibers

...latory system. A 2-year-old could do it Very young children who suffer lung injuries increase elastin expression and produce new elastic fibers inside the alveoli, Woods said. Adults do not have that ability and that has led physiologists to conclude that the elastin gene must shut off after we reach...

UCSF study will test new vaginal microbicide for herpes and HIV

A team of researchers at UCSF is seeking young women to participate in the first U.S. study of the safety of a new a vaginal gel designed to prevent herpes and HIV infection. If it is effective and approved by the U.S. Food and Drug Administration, the gel would be an important weapon in the fig...

Chronic jet-lag conditions hasten death in aged mice

...ed the mortality link in earnest by looking at how young mice and old mice fared when subjected to two diff...ed a six-hour backward shift. A "control" group of young and old mice did not experience any schedule shifts. The researchers found that the young mice ge...

Cracking the egg

...of cell division and growth, and sooner or later a young organism that carries a mix of genes from both parents. There are many startling events along the way, but one of the most fundamental and important is the transition from unfertilized egg to fertilized embryo. Think about it: The former is and wil...

Vanishing beetle horns have surprise function

... development, Onthophagus horned beetles use their young horns as a sort of can opener, helping them bust o... husks of their larval head capsules, resulting in young adult hatchlings whose heads were tightly (and lethally) encased within larval helmets. Altered Onit...

Hair-growth drug artificially lowers PSA levels in prostate cancer screening, study finds

... "It is important for physicians to know that many young men take Propecia and that their PSA level is lowered artificially. Doctors need to adjust the PSA interpretation by multiplying it times two for these men." Finasteride was initially developed in the 1990s for the treatment of benign prostatic hyp...

Road-crossing in chimpanzees: A risky business

...ard and rearward positions, with adult females and young occupying the more protected middle positions. The positioning of dominant and bolder individuals, in particular the alpha male, was found to change depending on both the degree of risk and number of adult males present, suggesting that dominant indi...

A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide

...," says Grandjean. "We must make protection of the young brain a paramount goal of public health protection. You have only one chance to develop a brain." ...

'Empty nester' parent birds use recruitment calls to extend offspring care

...l Press. It is well known that birds feed their young directly, but it is usually assumed that care ends when the young leave the nest and begin to forage for themselves. In many species, however, parents and young conti...

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