Scientists successfully extract rectal mass through anus

October 21st, 2009 WASHINGTON - Scientists at the University of Alberta have successfully synthesized a natural substance that shows highly unusual potential to selectively treat melanoma, a type of skin cancer that is often fatal. ... The researchers showed that when individuals who had kept the weight off for several years were shown pictures of food, they were more likely to engage the areas of the brain associated with behavioural control and visual attention, ...