“If UW-Madison is the birthplace of human embryonic stem cells, then the Primate Research Center is the cradle,” says Marina Emborg, a professor of medical physics and director of the Preclinical Parkinson’s Research Program at the center.Emborg and others stress the critical need for monkeys in stem cell research.In contrast to mouse embryonic stem cells, monkey cells – especially those of the rhesus monkey – grow in culture almost identically to human cells, allowing for the study of disease etiology and physiology to develop therapies and treatments for human diseases.