This is the second edition of a highly successful and well-received textbook on the responsible conduct of biomedical and health science research. It is aimed at faculty and graduate students in health science and biomedical science programs. In addition, those on National Institute of Health research grants, administrators at universities, and academic health centers will find it a useful resource. The major changes include new chapters providing overviews of each topic, several new published articles added to the readings, revised case studies as well as further readings and web addresses.