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Immigrant children in the United States appear to be less physically active and less likely to participate in sports than U.S.–born children, according to a report in the August issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.

COLD SPRING HARBOR, N.Y. – Combining the specificity of small interfering RNA (siRNA) silencing with the versatility of lentiviral vectors gives researchers a powerful tool for the investigation of gene function both in vivo and in vitro.

COLUMBIA, Mo. – Injuries are the leading cause of death among children after the first year of life, according to the Centers for Disease Control and Prevention. In a new study, a University of Missouri professor found that children living in households with unrelated adults are six times more likely to die of maltreatment-related unintentional injuries, compared to children living with two biological parents. The risk of maltreatment death is double for children living with foster or step-parents, or other related adults.

Doctors who treat HIV-infected crack users refer to them as "the forgotten population." A study being presented at this week's International AIDS Conference in Mexico City reveals that these patients frequently lack outpatient health care, do not receive life-saving antiretroviral therapy and continue to engage in risky sexual behavior that likely contributes to HIV transmission.

CLEVELAND – As Ohio and Michigan fruit and vegetable farms yield this year's harvest, they also will provide data about the eating choices of Latino migrant children for a Case Western Reserve University researcher. Information gathered this summer will help migrant families understand why their children are part of the growing national obesity epidemic and contribute to new interventions to combat this serious health issue.

The malaria parasite has waged a successful guerrilla war against the human immune system for eons, but a study in this week's Journal of Biological Chemistry has exposed one of the tricks malaria uses to hide from the immune proteins, which may aid in future drug development.

Malaria parasites (plasmodia) are transmitted to people via infected mosquitoes. Once inside their human hosts the parasites first set up shop in liver cells, then move into red blood cells (RBCs) to replicate and wait for the next mosquito to help continue the cycle.

Basel, 4 August 2008. New data from studies presented at the XVII International AIDS Conference in Mexico City have provided unprecedented insight into the toxicity of an impurity called ethyl methanesulfonate (EMS). The formation of the EMS impurity is a potential by-product of the manufacturing of mesylate salts, which are contained in over 40 drugs currently available worldwide.

ARGONNE, Ill. (Aug. 4, 2008) – Oxide scales are supposed to protect alloys from extensive corrosion, but scientists at U.S. Department of Energy's Argonne National Laboratory have discovered metal nanoparticle chinks in this armor.

PITTSBURGH, Aug. 4 – Antiretroviral drugs for HIV do not increase the risk for coronary atherosclerosis, a central risk factor for heart disease, according to a study led by the University of Pittsburgh Graduate School of Public Health to be published in the Aug. 8 issue of the journal AIDS and available online today. The results further suggest that antiretroviral therapy may offer men with HIV some protection against atherosclerosis – hardening of the arteries, caused in part by high levels of cholesterol, smoking and other lifestyle factors.

Boston, MA—Researchers from Boston University's Slone Epidemiology Center have found that approximately one in ten U.S. children uses one or more cough and cold medications during a given week. These findings appear in the August issue of the journal Pediatrics.

WASHINGTON -- Growing interest in publicly funded programs for young children has drawn attention to whether and how Head Start and other early childhood programs should be asked to prove their worth. Congress asked the National Research Council for guidance on how to identify important outcomes for children from birth to age 5 and how best to assess them in preschools, child care, and other early childhood programs.

Researchers are collecting vast amounts of diverse genomic data with ever-increasing speed, but effective ways to visualize these data in an integrated manner have lagged behind the ability to generate them. To address this growing need, researchers at the Broad Institute have developed the Integrative Genomics Viewer (IGV), a novel and freely available visualization tool that helps users simultaneously integrate and analyze different types of genomic data, and gives them the flexibility to zoom in on a specific genomic region of interest or to pan out for a broad, whole genome view.

Batavia, Ill.--Scientists from the CDF and DZero collaborations at the U.S. Department of Energy's Fermilab have combined Tevatron data from the two experiments to advance the quest for the long-sought Higgs boson. Their results indicate that Fermilab researchers have for the first time excluded, with 95 percent probability, a mass for the Higgs of 170 GeV. This value lies near the middle of the possible mass range for the particle established by earlier experiments.

Most rock paintings and rock carvings or petroglyphs were created by ancient and prehistoric societies. Archaeologists have long used them to gain clues to the way of life of such peoples. Certain rock frescos − such as the renowned Lascaux and Chauvet cave paintings or the petroglyphs of Scandinavia and North America − have already yielded substantial information on our ancestors' daily lives. However, for other regions of the world like Latin America studies are still fragmentary.