When a Lake Malawi cichlid loses a tooth, a new one drops neatly into place as a replacement. Why can't humans similarly regrow teeth lost to injury or disease?

Working with hundreds of these colorful fish, researchers are beginning to understanding how the animals maintain their hundreds of teeth throughout their adult lives. By studying how structures in embryonic fish differentiate into either teeth or taste buds, the researchers hope to one day be able to turn on the tooth regeneration mechanism in humans - which, like other mammals, get only two sets of teeth to last a lifetime.

Genetic ancestry, as well as facial characteristics, may play an important part in who we select as mates, according to an analysis that used population genomics and social science data to gauge the relatedness of parents in a study of asthma in Mexican and Puerto Rican children. 

Montreal, October 15, 2015 - Scientists at the Research Institute of the McGill University Health Centre (RI-MUHC) and Duke University have made a breakthrough that advances our understanding of how the brain detects and prevents dehydration. They have identified the structure of a key protein located in the brain, which is involved in body hydration and that could control temperature. The findings, which were recently published in the print issue of Cell Reports, could have important clinical implications, as this protein could be a target for the development of treatments and diagnostic tests for many health problems associated with the imbalance of bodily fluids, commonly seen in the emergency room.

Johannes Reiter, former PhD student in the group of Krishnendu Chatterjee at the Institute of Science and Technology Austria (IST Austria), is co-author of a Nature paper on genetic alterations that drive the progression and relapse of cancer. An international team of scientists from the US, Germany and Austria identified novel genes associated with chronic lymphocytic leukemia through the analysis of high-throughput sequencing data.

An international team of researchers, together with participation from the University of Bonn, has investigated a stunning fossil finding from the Cretaceous period. The 125-million-year-old mouse- to rat-sized mammal is preserved so well that even detailed analyses of its fur are possible. An astounding finding: The animal may have suffered from a fungal infection of the hair which also strikes mammals nowadays. The scientists are publishing their results in the journal Nature.

Researchers from the University of East Anglia are calling for medical trial data to be kept in national repositories.

A BMJ study published today reveals how a series of barriers stopped researchers from reviewing the effects of heart failure drugs such as beta blockers on patients.

Now they are calling for greater transparency in research and recommend that access to data should be a mandatory requirement of funding.

They warn that the risks of not doing so, could lead to "erroneous clinical decisions".

Want to hit a fastball like the New York Mets do? It won't surprise you much to learn that baseball players don't think much about hitting the ball - much of it comes from trained muscle memory and a great deal of visual ocularity.

The latest episode of “It’s Okay to Be Smart” outlines the combination of practice, strength, brainpower, and good eyesight that helps players predict the correct time to swing the bat. Fortunately none of those things will make you field the ball like David Murphy, even if you hit like him.

Human twin embryos created in the laboratory by splitting single embryos into two using a common method known as blastomere biopsy may be unsuitable both for IVF and for research purposes, according to a new study.

In the UK, the Human Fertilisation and Embryology Authority Code of Practice says that clinics should not be producing embryos for IVF treatment by embryo splitting, such genetically identical embryos should be used only for research purposes. However, in the US the Ethics Committee of the American Society for Reproductive Medicine has not indicated any major ethical objections to placing two or more artificially created embryos with the same genome into the uterus. 

MONTRÉAL (October 19, 2015)- Researchers from Mayo Clinic in Jacksonville, Florida, formed a multidisciplinary sepsis and shock response team (SSRT) to help alert emergency department providers when these disorders are suspected. An automated electronic sepsis alarm for early recognition, followed by standardized multidisciplinary management of patients with suspected sepsis or shock with SSRT, improved the compliance with standard care measures and overall mortality.