For some Canadians, any cut such as from dental work or surgery can cause days or more of bleeding. Although they are not hemophiliacs, for some an ordinary bruise can balloon into the size of an orange.

Biomoda, Inc. (www.biomoda.com) and Advanced Medical Imaging and Genetics (www.amigenics.com), an innovative medical clinic specializing in prevention and early detection of disease, announced their intent to collaborate on a variety of projects to advance technology for the early detection of lung and other cancer.

An international research team led by Columbia University Medical Center successfully used mouse embryonic stem cells to replace diseased retinal cells and restore sight in a mouse model of retinitis pigmentosa. This strategy could potentially become a new treatment for retinitis pigmentosa, a leading cause of blindness that affects approximately one in 3,000 to 4,000 people, or 1.5 million people worldwide.

How do you study-and try to cure in the laboratory-an infection that only humans can get? A team led by Salk Institute researchers does it by generating a mouse with an almost completely human liver.

Scientists from Sydney's Garvan Institute of Medical Research have published a paper, online today in Nature Cell Biology, describing gene expression in a prostate cancer cell: more sweeping, more targeted and more complex than we could ever have imagined, even five years ago.