Ina massivegenehunt, threegroups of internationalschizophreniaresearchershavezeroed in on severalmutations that harbor some of the secrets of schizophrenia.
DeCode's heart genehunt was led by an unassuming young researcher named Anna Helgadottir, who spent four years scanning the genomes of thousands of Icelanders and constantly worrying that the efforts might yield nothing.