health - "study published"

First year college students believe that occasional nonmedical use of prescription pain killers and stimulants is less risky than cocaine, but more risky than marijuana or consuming five or more alcoholic beverages every weekend, according to a new study published in the September issue of Prevention Science, the peer-reviewed journal of the Society for Prevention Research.

Scientists have uncovered new evidence that strengthens the link between a host-cell gene called Apobec3 and the production of neutralizing antibodies to retroviruses. published in the Sept. 5 issue of Science, the finding adds a new dimension to the set of possible explanations for why most people who are infected with HIV do not make neutralizing antibodies that effectively fight the virus.

By introducing a genetic switch in mice it is possible to increase or decrease the production of specific protein molecules in their kidneys. Thus, researchers can study the influence of specific proteins on disease development. Scientists of the German cancer Research Center (Deutsches Krebsforschungszentrum, DKFZ), Heidelberg University Hospitals and other research institutes have published this model of investigating severe kidney diseases in the latest issue of Nature medicine.

Scientists investigating the mechanisms of Down Syndrome (DS) have revealed the earliest developmental changes in embryonic stem cells caused by an extra copy of human chromosome 21 - the aberrant inheritance of which results in the condition. Their study is published online in the American Journal of Human Genetics.