Numerous infectious diseases are described as idiopathic, meaning that "the cause is a complete mystery." For many idiopathic diseases, the causes become clear when certain techniques are applied to the patient's blood or other tissues. Cell Wall Deficient Forms: Stealth Pathogens, Third Edition describes these techniques. In the case of tuberculosis, a disease that has recently regained importance because the strains have acquired antibiotic resistance, the book describes a method that is widely used abroad. This method typically renders the diagnosis within 72 hours. The book examines a plethora of issues and provides answers to the following questions: