Roentgen equivalent man has been defined since 1976 as equal to 0.01 sievert, which is the more commonly used SI unit outside the United States. A number of earlier definitions going back to 1945 were derived from the roentgen unit, which was named after Wilhelm Röntgen, a German scientist who discovered X-rays. The acronym is now a misleading historical artifact, since 1 roentgen actually deposits about 0.96 rem in soft biological tissue, when all weighting factors equal unity. Older units of rem following other definitions are up to 17% smaller than the modern rem. One rem carries with it a 0.05% chance of
Sanford Burnham Prebys Medical Discovery Institute Sanford Burnham Prebys Medical Discovery Institute Sanford Burnham Prebys Medical Discovery Institute (SBP) is a non-profit medical research institute with locations in La Jolla, California, and Orlando, Florida. There are more than 850 scientists at SBP blending fundamental research with drug discovery to address unmet clinical needs in the areas of cancer, neuroscience, immunity, and metabolic disorders. Research at SBP is supported by funding from the National Institutes of Health, National Cancer Institute, and Juvenile Diabetes Research Foundation among others, and partnerships with pharmaceutical companies such as Johnson & Johnson Pharmaceutical Research and Development. In 2008, SBP was awarded a