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MOSCOW and NEW YORK, 20 September – A group of Russian AIDS activists are charging that the Russian Ministry of Health is denying that there are drug stock-outs that prevent patients from starting or continuing treatment. "In this situation, people with HIV face a choice: to die quietly at home or try to attract the attention of the government and the media," said Alexey Yaskovich, a Russian activist from Novgorod.

Caring for children can be a tough job, particularly if you are a female cichlid fish.

Native to the crater lakes of Nicaragua, cichlid fish look after their young by defending them against would-be predators. While male and female cichlid fish generally share parental responsibilities, research shows that this is not always the case.

Patterned feathers, previously thought to be used only for camouflage in birds, can play an important role in attracting a mate and fending off rivals, a University of Melbourne study reveals.

A protein called PU.1 is essential for the development of dendritic cells, the sentinels of the immune system, Walter and Eliza Hall Institute researchers in Melbourne, Australia, have shown.

The large Nordic twin study investigating the heritability of subarachnothe role of genetic factors underlying the development of SAH suggests that the role of genetic factors underlying the development of SAH is less than previously believed.

The emerging idea that obesity may have an infectious origin gets new support in a cross-sectional study by University of California, San Diego School of Medicine researchers who found that children exposed to a particular strain of adenovirus were significantly more likely to be obese.

A recent study by researchers at the University of Utah determined that the 2009 pandemic influenza A (H1N1) caused a higher rate of neurological complications in children than the seasonal flu. The most common complications observed were seizures and encephalopathy. Full details of the study, the most extensive evaluation of neurological complications following H1N1 flu in children, are published in the September issue of Annals of Neurology, a journal of the American Neurological Association.

ROCHESTER, Minn. -- Individuals with disrupting mutations in the BRCA1 gene are known to be at substantially increased risk of breast cancer throughout their lives. Now, discoveries from an international research team led by Mayo Clinic researchers show that some of those persons may possess additional genetic variants that modify their risk. These new findings enhancing individualized medicine appear in the current Nature Genetics.

ROCHESTER, Minn. -- A consortium of cancer researchers has identified four chromosome locations with genetic changes that are likely to alter a woman's risk of developing ovarian cancer. The findings appear in Nature Genetics in an article authored by a Mayo Clinic researcher.

DURHAM, N.C. – An international consortium of scientists has discovered new genetic variants in five regions of the genome that affect the risk of ovarian cancer in the general population, according to two separate studies published today (Sunday), online in Nature Genetics.

Biologists have found that a key protein that regulates the biological clocks of mammals also regulates glucose production in the liver and that altering the levels of this protein can improve the health of diabetic mice.

NEW BRUNSWICK, N.J. – Rutgers researchers have discovered how HIV-1, the virus that causes AIDS, resists AZT, a drug widely used to treat AIDS.

The scientists, who report their findings in Nature Structural & Molecular Biology, believe their discovery helps researchers understand how important anti-AIDS treatments can fail and could help AIDS researchers develop more effective treatment for the disease.

A drug commonly used for the treatment of chronic obstructive pulmonary disease (COPD) successfully treats adults whose asthma is not well-controlled on low doses of inhaled corticosteroids, reported researchers supported by the National Heart, Lung, and Blood Institute (NHLBI), part of the National Institutes of Health.

A new material could help surgeons more accurately locate breast cancers, reduce the need for second surgeries and minimize pre-surgical discomfort for patients. Microscopic gas-filled spheres of silica, a porous glass, can mark the location of early-stage tumors to show their position using ultrasound imaging in the operating room.