Veículo

• Home
• Veículos
• Harvard Medical School (EUA)

First global guidelines proposed for ancient DNA research A scientist extracts DNA from ancient human remains and prepares it for analysis. Dozens of scholars have proposed a set of ethical guidelines that could be used worldwide for conducting genetic research on ancient individuals. Image: Kayana Szymczak As ancient DNA research sweeps the globe, ballooning from zero genomes sequenced as of 2009 to more than 6,000 as of 2021, those involved in and affected by the genetic analysis of human [...]

Antioxidant reverses BPA-induced fertility damage in worms From plastics to pesticides, it seems like every week delivers fresh news about the dangers of endocrine disruptors—chemicals in the environment that alter the body’s hormones and can lead to reproductive, developmental, neurologic and immune problems and cancer. Industry regulation and individual consumer choice can reduce exposure to such chemicals, but there are few options to counteract damage that has already [...]

The heart’s ability to beat normally over a lifetime is predicated on the synchronized work of proteins embedded in the cells of the heart muscle. Like a fleet of molecular motors that get turned on and off, these proteins cause the heart cells to contract, then force them to relax, beat after life-sustaining beat. Now a study led by researchers at Harvard Medical School, Brigham and Women’s Hospital and the University of Oxford shows that when too many of the heart’s [...]

Bacteria that assist fungus-farming ants may be a source of new drugs