Verkkothe challenge posed by ethical problems and teratoma formation of embryonic stem (es) cells; Verkkobiology, ecology, medicine, and health, providing an opportunity for us to uncover the holy grail of biology. Microecological exchanges between humans, animals, and. Verkkobesides normal developmental functions in multicellular organisms, these mother cells are believed to be the holy grail of medical therapy with high promise for. N levy 1 , m p w. A decade ago, the. Verkkoharvey alter, michael houghton, and charles rice on monday were awarded the nobel prize in physiology or medicine for their discovery of the.