Battling disease, championing new techniques, recommending necessary medications, and offering comfort and guidance to those in need are just some of the many responsibilities with which healers over time have been charged. Even as the field of medical science rapidly evolves, doctors, researchers, and other medical professionals serve as significant reminders of the human element that has sustained the craft of healing for millennia. Readers discover surveys of the lives of many of those who are persevered in their pioneering quest for new and improved ways to treat a variety of ailments and conditions.