blog posts ‘Tumor shrinking’ drug shows promise in dogs before clinical trials on humans Jan 26, 2017 8:30 am by WCBS-TVIllinois in the News Share on Facebook Tweet Email Images WCBS-TV (Jan. 24) Illinois professor Paul Hergenrother discovered Pac-1 10 years ago. “We have seen positive results, especially in combination with other widely used cancer drugs,” he says. Share on Facebook Tweet Email