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This indicates that the mutation originated in just one person who became the ancestor of all subsequent people in the world with blue eyes, according to a study by Professor Hans Eiberg and colleagues at the University of Copenhagen.

But scientists from the University of Southern California showed that, in mice, the Fasting Mimicking Diet (FMD) significantly lowered the percentage of damaging immune cells, while allowing the protective coating to regrow.

A link has been made between sleep apnoea - which is often indicated by loud snoring - and worse cancer outcomes in recent studies.

Five people living with HIV are currently free of the detectable virus after taking part in a new vaccine-based therapy.  The patients are also not taking daily antiretroviral drugs, with one having been drug free for a total of seven months; a milestone moment in a move towards a future where HIV treatment doesn't require ART.

A quick and simple blood test could soon diagnose which cancer a patient has and how advanced the disease is, scientists said.

Comprehensive site exploring various facets of ethics.

NIMR scientists have devised a genetic multi-colour cell labelling approach for Drosophila, called Flybow, to facilitate the visualization of cells in neural circuits with single cell resolution. The research is published in Nature Methods.

Article on transgenic livestock

Possibly the most exciting use of stem cells rests on their ability to differentiate into an enormous range of healthy functioning adult cells, thereby providing a replacement source of cells to treat serious diseases. This ultimately means that virtually any disease that results in cellular and tissue destruction can potentially be treated by stem cells. Some of the conditions are particularly debilitating and these include diabetes, spinal cord injuries, retinal disease, Parkinson's disease, heart disease and cancer.

Debate cards with fictional individuals and perspectives to base a debate upon.

If you are finding it difficult to understand stem cells, you should know that many other people share your struggle. To make it easier for everyone, we have created a website that covers all you need to know about the topic. With regular updates and a language that speaks clearly, we hope that you will understand the potential of stem cells and how they might play a role in your life or that of someone you know.

BBC News: Quick Guide: Cloning  Succinct sections on key aspects of cloning

Scientists in Australia have grown the world's first kidney from stem cells - a tiny organ which could eventually help to reduce the wait for transplants. The breakthrough, published in the journal Nature Cell Biology, followed years of research and involved the transformation of human skin cells into an organoid - a functioning "mini-kidney" with a width of only a few millimetres.

wide array of interactives, suitable for homework, remediation or interactive stations

DNA folding model

Genetic studies of human disease are more challenging to perform in sub-Saharan Africa because genetic diversity is greater than in other populations. This pilot will increase our understanding of African genome variation and enable the design of large-scale genetic association studies in the region. Studies into the genetic basis of disease in European populations have made major advances in the past few years, yet similar studies in sub-Saharan Africa have been slower to develop. The high level of genetic diversity that exists in populations from sub-Saharan Africa makes genetic associations with disease more difficult to identify. The African Genome Variation Project aims to collect essential information about the structure of African genomes to provide a basic framework for genetic disease studies in Africa.

Collection of interactives for organs, skeleton, puberty, muscles, and the nervous system

1:38 Animated description of the digestive process and the structures of the digestive system involved at each stage.