With demand for human donor organs historically and increasingly outpacing the available, viable supply, researchers and physicians have looked for decades at xenotransplantation—cross-species transplantation—as a possible vehicle to overcome the problem. The traditional approach to xenotransplantation, however, is an “impediment to moving transplantation forward,” asserts Karl Kraebber, director of xenotransplantation operations at the University of Alabama at Birmingham School of Medicine. His team believes the solution isn’t in expensive and time-consuming renovation of existing buildings. “Our more novel approach is for flexible, modular spaces, to be used for small pilot trials and then scaled up once we have partnership with our governing agencies,” he says. “We’ll take ‘fast and good’ over ‘slow and perfect’ every time. It doesn’t mean we’re cutting corners.”