Journal Journal: Genetic diversity a good thing for the population as a whole 4
http://www.reuters.com/article/scienceNews/idUSTRE54J5IN20090520?sp=true
Down's syndrome reveals one key to fighting cancer
" People with Down's syndrome rarely get most kinds of cancer and U.S. researchers have nailed down one reason why -- they have extra copies of a gene that helps keep tumors from feeding themselves."
