While research has enabled us to better understand the nonhuman primates, they have repaid that by repaid that by providing medical scientists with important tools for the study of human biomedical problems. This book is about those research tools. The book was designed by identifying areas of human medical research that are under intensive research study today. Authors were then selected based on their expertise at using nonhuman primates as models for the human condition. Each was asked to use as comparative an approach as models for the human condition. Each was asked to use a comparative an approach as possible, to provide the reader with knowledge relating to the usefulness of various nonhuman primate species to each specific research area.