A University of Pittsburgh reproductive biologist relied on the now-discredited stem-cell findings of a disgraced Korean scientist to win a $16.1 million federal grant last fall, according to federal documents and letters obtained by the Pittsburgh Tribune-Review. Pitt's Gerald Schatten will use the money for an ambitious stem-cell research program that will occupy four of seven floors of Magee-Womens Research Institute's building, now under construction in Oakland, the documents show. The five-year grant, awarded to Schatten in September by the National Institutes of Health, is based in part on cloning experiments deliberately falsified by Hwang Woo-Suk, the documents show.